It’s similar, but not the same. Safari lets you dynamically generate rules that are then compiled for privacy and efficiency. The limits were increased to 150000 rules per content blocker due to user demands [1]. And each extension can have multiple content blockers.

MV3 has a measly 30000 static rule limit. These rules are included with the extension and cannot be updated dynamically. And a 5000 dynamic rules limit. [2]

EDIT: Chrome now has a 300000 shared pool for static rules for extensions that go over their 30000 limit. And a 30000 dynamic rule limit [3].

[1] https://adguard.com/en/blog/adguard-for-safari-1-11.html

[2] https://adguard.com/en/blog/adguard-mv3-beta.html

[3] https://developer.chrome.com/docs/extensions/develop/concept...