Last I checked, Bot events can’t crash you. Lag you yes, but anything can lag you if used in bulk.
Also, if hosts were irresponsible to have serious issues with Bot Events, they should not have had them on in the first place.
It boils down to hosting responsibility. I never had any issue with Bot events because I knew what to do when bots got out of hand.
There was a /clearbots command to stop any unwanted activity.