This is Parallel Timeline key, not his base. He was still testing out his newfound powers at that point. That is not applicable hjere.
Furthermore, his entire plan in base was to get Saitama to become serious so he could copy him.
Exactly. His entire plan was to make Saitama use his full strenght because he saw how powerful he was and wanted to copy him. It's not like he wanted to copy him just because.
He had no need to copy Blast's statistics. He is stronger than Blast, what is your point? Why would he copy the strength of someone weaker than him?
Him copying Gravity Knuckle and Hyperspace Gates is proof that copying is a go-to move for him, however. It does not support your argument whatsoever.
And how exactly would he know that Arishem is stronger than him, exactly? Why would he already know that there is a one-shot gap between them? Why would you assume that in this situation he would act like he did with Saitama, someone that he fought against for several minutes while he was still evolving, rather than how he acted with Blast, considering that just like with him he wouldn't know anything about him?
And copying Gravity Knuckles and Hyperspace Portals are an entire different thing. With those he is copying techniques, with Modes, which is what is being argued here, he copies statistics.
So we agree that Parallel Timeline Garou's objective is to copy the stats of people stronger than him.
Yes... And how would he know how strong Arishem is, exactly?
He had already copied Saitama's previous level of strength and thus did not need to copy him constantly. Saitama afterwards began growing exponentially which he why he switched to copying him again.
While using "Modes" he have the face of the person he is copying the statistics of. During the whole fight, he never had that. And at that point he still didn't understood that Saitama was evolving too, so why exactly would he copy his stats since, for him, his power didn't change since before?
He has extrasensory perception based on perceiving energy. He can perceive the power levels of his opponent. That's why he didn't copy Blast, and why he immediately sought to copy a serious Saitama.
Where is it ever stated? Because this seems like an assumption and nothing more. He can perceive the energy flow of the Universe, not of his opponent, otherwise he would already know he didn't have any chance of fighting Saitama regularly during his battle on Io and would have gone for the Mode immediately.
The moment Arishem attempts to use his AP, it's copied.
His first move is to paralyse the target with TK, which have Universal LS. And if Arishem uses his AP is any form, Garou is dead before he can even copy that.
All in all, you are still very wrong about the tactics of Garou in his parallel (peak) form.
I am stating what happened. It's you who is making many assumptions.
But I already know that in a second there will be a FRA train in favor of Garou because he is more popular, completely ignoring any context regarding his Modes or anything. I am so tired of this shit. I am out.