If zero decking is good, then why are thick head gaskets or gaskets with a big bore (one size fits all) not an issue?
Thick headgaskets can be an issue. Some people try to use them to drop compression and avoid detonation, but for the same reasons that zero-decking works, thick gaskets can aggrevate the problem. Between .035" and .040" clearance is optimum, but you have to be sure that is what you have with the compressed gasket (and all 8 pistons)or you can smack the head.
