Not really. Barca at their peak could not be stopped no matter what the opposition did. Madrid played a similar way their playing right now against us many times and we still managed to beat them. It's the personal that matter tbh, Barca had Xavi, Messi and Iniesta at their absolute best, Bayern do not have that. Pep is trying to make Bayern play like Barca without the players best fitted for that system.
Mourinho's Chelsea was also unbeatable in 2005' when no one figured out how to play against their strange sit-back-and-play-counterattacks football.
When teams figured out how to play against it, they were not that dangerous anymore.
What if Barca's Tiki-Taka was new and fresh back then, and it is an old story currently, and everyone learned the tricks how to defend?
Again, if we assume that Tiki-Taka is a godlike formation, that would mean that (if played correctly) it would be unbeatable both in 2020 and 2120.
If you get my point.
In one moment each tactic/formation gets too old and too easy to defend against.