I said what I thought appropriate to get my point across. If I'd just said 'Vindicares too OP' you wouldn't have taken me seriously, thought I was being a troll, and/or ignored the comment because it's groundless.

I admit, I can be long-winded; However, if I'm not allowed to discuss 40k lore in so far as it's relevant to the conversation, how am I going to give context to any statement I make on the topic?

I understand, and to an extent, agree with you that people arguing about the lore can ruin a good RP. However, if you're trying to inform me that I won't be allowed to talk about 40k lore in a 40k roleplay, to any extent, then I'm afraid I won't be participating.