I would not mind getting more subs, but as long as my CTR, views, and retention are good, I do not worry about subs much.
I agree that a lot of viewers just do not subscribe to many channels. I have been on YT since 2006, I am on YT for way too many hours a day (I am gloriously retired ha ha)... but... I subscribe to just under 100 channels. And it is past time to clean out the list of channels I do not watch regularly. I watch a lot but there are very few genres I would bother subscribing to.