The stories and information posted in this channel are artistic works of fiction and falsehood. Only a fool would take anything posted here as fact.
This is a channel for all fools!
If you submit many invalid shares to a pool (i.e. your miner is misconfigured), you may get a short temporary ban from the pool. Fix your miner and wait a few minutes.
If you have many concurrent connections to a pool (>50) the pool operator may suspect that you are running a botnet and ban you. If you run many miners, you should run xmr-node-proxy, or xmrig-proxy, or consider running your own pool.
Ensure that your miner is up to date, and that the proof-of-work algorithm is set to RandomX.
No, mining is for suckers. It depends on the efficiency of your miners, your power costs, and the initial investment for your mining hardware.