If you are okay with the default protections, closing that modal is one [x] away.
If for some reason you want spam, then toggle it back on.
We could go a step further and ban the bad actors entirely so they don’t pollute the pool. Just allowing them in the feed introduces all kinds of engineering headaches. How are retweets handled? Replies? Etc. it would be a huge distraction to support the bad actors instead of removing them.
HaHa, nice try Xi Jinping.
Retweets that originate from filtered tweets simply don't get included in the filtering person's feed. Same with replies.
Engineering wise, these features should be peanuts for the HN crowd.