that's entirely beside the point. what was argued is whether ohma has the individual power of every rider not how often/whether he ever used it. we know based on all extant evidences so far that ohma zi-o possesses the power and history of every riders, which include something like blade's joker attribute or the taros' unique roles of being den-o, and takumi's orphnoch status and phillip's avatar of true gaia memory status according to the databook. whether ohma used it on the show or not is of no matter. arguing that someone didn't have something because they never use them when it's pointed out that they have it doesn't really work unless you actually prove it to be so. by that train of thought, zi-o doesn't even have rider armor barring from build, ex-aid, fourze, gaim, w, kuuga, ghost, wizard, and decade (alongside all of its derivation) simply because sougo never use the rest of his ridewatch on the show, ignoring the fact that sougo does indeed possess all 20 ridewatches. this is exactly that same case, just replace the ridewatches (the evidences) with the event from the show and wog, while the rider armor (the argument) is replaced with other riders' individual power
bob never using x, y, z is not necessarily equal to bob not having x, y, z. especially when all evidences point towards that bob does possess x, y, z. arguing for the contrary would shift the burden of proof unto you to substantiate your claim with actual evidences. which no one ever did so far.
in fact, this wiki actually have quite a few character who fall under the same category. some examples
rimuru tempest from regarding my reincarnation as a slime possess the power of all his subordinates, yet he barely if never actually use any one of them in the story but we still include them all because we know for a fact that rimuru does have them even though he barely uses any of it
reinhard heydrich from dies irae possess quite literally everything that his einherjar possess. skills, memories, experiences, even power. we barely see him utilizes any of those and we still include them on his page because that's something that he factually possess
yhwach from bleach possess all the power of sternritter due to how his soul partition work. someone who lacks something was given a piece of yhwach's own soul, and when they die yhwach would gain pretty much their everything. this made yhwach who were originally nothing more than a crippled baby to a fully functional being. we also never saw him use any of the schrift but we still include them because it's still something that yhwach would have
soul king also from bleach have organs that would later on become a being known as mimihagi, gerard, pernida. we still include the power of those 3 unto soul king's page because those 3 powers are something that the soul king would have regardless of his actual showing of utilizing such power because we factually know that he possesses them by virtue of those 3 being a part of his existence
and those are only a few examples from a series that i'm somewhat familiar about. i'm sure there's a plenty of other examples where such thing happens but you get my point
and your second paragraph also wouldn't work for narrative reasoning because by that point in the series, the timejackers already switch their strategy by not making another rider watches by stealing a riders' power in the past. the timejackers by that point had resort to making another rider watches in the present, hence why it was possible for both rider of the same existence to exist simultaneously.
your point that the joker attribute was something that retcon the event of blade is also moot for the same reason. the retcon of a rider show's event only happened within the first half of the series where the timejackers was still making their watches by stealing the power of past riders, it doesn't happen for the two parter where the creation of the watches were in the present. kenzaki's joker attribute getting inserted into his ridewatches didn't retcon the story/event of blade, that just signifies a finally happy ending for blade's story for both hajime and kenzaki. your entire second paragraph is practically nothing than your own conjecture
so, again, refute back with actual evidences. which none of you have provided so far
