This process has been underway since the project switched their focus from the Mozilla Suite to Firefox. Early Firefox was lightweight with limited features and the idea that you would add your own as extensions for the features you wanted. Then it started gaining traction and the Mozilla developers started forcing features in that should’ve been extensions. It’s been downhill ever since!
Even better, they took actual extensions and made them built-in and impossible to remove. The work was already done to keep a lightweight browser with extra features in option, and they reverted it.
A few months ago people would have still downvoted your comment, but the message has made it to everyone now. Mozilla and with that Firefox is an endangered species that needs to be steered back into safety.