>Could it be that sharing conservative ideas is against Reddit's community guidelines?
Sharing conservative ideas is not against reddit's community guidelines. the sitewide guidelines are pretty simple, actually:
https://redditinc.com/policies/reddit-rules
to summarize:
1. don't harrass people on or off-site, nor promote hate
2. no spam or content manipulation
3. no doxxing nor non-consential sexual material
4. no CSAM or CSAM-adjacent material
5. don't impoersonae others
6. label NSFW content
7. no illegal content
8. don't break reddit on purpose
other conservative subs have historically had issues with rules #2 and #8, so I'm sure Reddit is more sensitive to that. In addition, current conservative leaning subs do tend to have more issues with rule 1, even to this day. I imagine what you are seeing are content being pre-emptively removed to prevent potential harassment that can get the sub banned.