Friendly reminder that Mastodon, et al is federated, which means you almost certainly won't see every reply on a thread. Let's say you're reading a post from "reasonable.domain". And someone from "cesspool.domain" replies to it. If your instance blocked "cesspool.domain", you won't see that reply. This effect minimizes the appearance of harm. It can be a blessing, but it also means you won't always see the problems inherent on these platforms.