the ones who insist you should kneel are usually just jerks who dont seem to know how to talk to anyone full stop.

but i guess sometimes it may be if they are new to the scene they think they have to live up to what often appears to be the 'norm' for Dom/mes on the net,depending on which sites you come across lol
just as some submissives to begin with are not quite sure whether they should refer to every Dom/me as Master Mistress etc

if you politely put them straight the first time they generally will react in one of two ways, either they apologise and admit its all new and they're unsure,or you get the...you're not a 'true sub' and/or abusive ones ...you can soon sort the wheat from the chaff