To disable them (referred to as enabling Toxic Mode in the settings), it’s as simple as:

Settings -> Advanced -> Click the “I feel like some content is missing. What’s up?” text at the bottom -> Enable Toxic Mode

I didn’t want to add that option, but I conceded nonetheless, and it’s been available the whole fucking time. I’ll admit the fine print buried at the bottom of the advanced settings isn’t the most upfront place to put it, but it is there, and there’s nothing stopping you from turning it on.¹

¹ Admins who deploy Tesseract can opt to disable the availability of toxic mode, but it is available by default.

It even flat out says why that exists:

Tesseract attempts to filter out as much baseline toxicity as possible in order to make the default experience welcoming and round off some of the Fediverse’s rougher edges. This is particularly important for attracting and retaining new users and for facilitating long-term growth of the platform. If you absolutely must, you can enable ‘Toxic

When non-toxic becomes toxic. I don’t object to the idea These include very vanilla users, left, right, center. What is this person’s criteria for “toxic?” but yumpin yimminy the wording…