V3 yes, obviously. V3 is what caused the reduction in API that prevented proper adblocking. V3 adblocker are less capable, cannot do dynamic blocking and delegate the blocking to the browser that can impose rules.
Brave work around this by directly injecting the adblocker in the browser, bypassing extensions API entirely. Other browsers do not do that. As of today I do not know of any browser maintaining a fork of v2. When Google killed it with v3 it was gone. Which browser are you talking about?