That misses the whole problem. Yes there are teams that are better at making new strats for/against meta shifts, but I doubt anyone (who isnt just a braindead fan looking for an excuse to cope) would actually complain about innovation being rewarded.
The concern is that it has the potential to invalidate work teams have already done. Creating an even playing field on some (importantly not all!) maps this close to the start of the season is plain uncompetitive, since its now based on luck if the maps you spent most time on need to be overhauled.
Obviously gonna depend on how strong he is in pro play if its an actual issue/a major issue, but still weird af for riot to do this... again.