Rat-holing in Zoom 'strategy'

Before zoom I would only ever leave a table the fish either left or busted or when my stack reached over 300 big blinds and there was another decent player at the table with a similar stack size (using a 20BI rule and it seemed daft to me to play with what was effectively ~10% of my roll on the table).

Now when I play Zoom one of those reasons I would keep a deep stack is gone because I'm no longer fish hunting I'm trying to beat the average of the player pool. I've taken to using a 180BB max rule now instead were I close any of zoom tables that have more than 180BB and immediately rebuy in for 100BB aka Rat-holing.

My reasoning being that I'm no longer losing my spot at a table with a fish and I still don't trust my deep stack game enough vs. decent players who I think most of the players who have accumulated those stacks will be.

Questionable poker etiquette aside, am I losing value because I'd rather use hyper nitty BRM and shy away from any large pots?