I usually tag problematic users (usually those who constantly discuss in bad faith, are needlessly hostile or rude towards other users, or push dis/misinformation and propaganda) so I know who are repeat offenders with consistent bad behaviour, but I rarely block people unless it’s very clear that they have no interest in participating in good faith or are so irritating that I can’t deal with them anymore. A lot of problematic users still have valuable things to say and I’d rather not make my feed an echo chamber, even if those people often piss me off with their nonsense. But with some of them it sure is tempting.