My ISP seems to frequently rotate IPs with other people who can't behave, so my IPs always have garbage reputation... that probably has a lot to do with it as well.
How do I know this? I have received reports from various websites (and manually queried some public block lists/RBL/etc.) that my IP range was blocked due to all sorts of different things like open proxies, CSAM etc. even if I've never visited that site before, and I know just from being a neteng that that such traffic is not originating from my devices/router and I don't have any observably compromised devices or suspicious traffic when monitoring it.