I am a "minor node operator" and this article gets at the issues for me:
The way conversation has been shut down by the devs, and the actual changes being introduced, both seem very un-bitcoin-ethos.
Is running a node "for the professionals and IT experts" or should it be for nearly anyone? What's best for the network? What's the best way to prevent that dreaded 51% attack? I think it's widespread decentralization of nodes, and it's remember what bitcoin is for: it's money--Stateless money to end tyranny and fiat slavery. Period. People who want to do other things should do it someplace else.

Protos
Three sneaky changes in Bitcoin Core v30 are confusing node operators
Bitcoin Core v30 will dramatically raise the mempool storage allowance of nodes for arbitrary data unrelated to the on-chain movement of BTC.