@cryptids I don't think so, but an alternative solution is to use a browser extension like TamperMonkey that lets you inject css and/or javascript into any site.
If you were to set up a basic TamperMonkey script for the site(s) in question, the following will hide every post that has an image without alt text, or no alt attribute at all.
```
GM_addStyle('
article:has(img[alt=""]),
article:has(img:not([alt])) {
display: none;
}
');
```
See also: https://www.freecodecamp.org/news/customize-website-experience-with-tampermonkey/