No, the onus is clearly on the developers, who are the ones with the professional responsibility to make software that abides by the laws.
cross-site resource caching has been unavailable in major browsers for a while - safari since 2013, chrome since 2020, firefox since 2021.
Theoretically, it should be more efficient hosting these things yourself - there are fewer origins to request, which means fewer lookups, fewer connections, etc.
