If im not mistaken sage battlefield matches on power not on level. So i see absolutely 0 reasons to freeze. You are just missing power up rewards which come with some exp rewards. Sure if you want to feel cool by having 200k power on lvl 80 it makes sense. But without level freezing you would probably have 250k-350k power on level 100 after spending the same amount of time playing.

What was mentioned in the post above doesn't relate to level freezing at all, its something everybody does

Interesting, i actually didn't know about many of these things. Still there are alternative ways to avoid being plundered by whales but matsuri is a strong argument, its something which is impossible to do with non meta team when you are high lvl but under like 800k power

Are you sure about matsuri though? Just tested and i faced 110 lvl whales 2 times and im 109. It might be that it matches on wins/loses not level