Its about solidarity I think.
On the right you don't need the solidarity of the oppressed majority to influence the powerful few - you just do a business deal with them over a game of golf. I know I am simplifying, but there isn't that same extreme fear that someone is a 'scab' when you thought they were on your side for right-wingers. The left have to tread on egg shells, using the approved language and references or you might be distrusted and shunned.
I am learning though as the years go by that there is no one on this earth I agree about everything with, no one who wouldn't disappoint me (including myself) and I am becoming more tolerant I suppose (perhaps it is easier now that I don't socialise with anyone I haven't won the porn argument with, and with the new people I meet I tend to avoid contentious subjects to avoid despair), so I don't mind agreeing with Tories about some things. I wouldn't worry OP