Part of this also can happen because certain elements form the past have been retconned, which the current writing staff will happily accept because they don't know how to keep these elements alive while making an engaging story.
Like Sonic CD, the Japanese advertisement for the game was literally "Sonic will go faster than the speed of light for the first time, breaking the barrier of time, and freely traveling between past and future" and even the manual would include the thing about Sonic time traveling by reaching the speed of light. But of course, they can't keep Sonic moving at those speeds, so the fact that they have basically retconned Sonic CD by saying "it's all the Time Stones" helped them with that by not having Sonic time-traveling by his own speed anymore.
It's just the new path the Sonic series is following as of now and honestly, I wonder for how much longer the current rantings on this Wiki will be kept until someone finally brings out it doesn't make sense 90% of the time.