Earlier quoted context omitted.
Transaction fees for bitcoin sent via the lightning network (which is a layer 2 solution) are in the "less than a cent" category and are settled in a few seconds. This is not fiction, this is i.e. how Trump made his for-the-cameras bitcoin payment during his campaign.
Lightning isn't even a good solution for most diehard bitcoin users. It's a failed project. It would take 27 years to onboard every internet user to the lightning network unless you start adding level 3 aggregators and then at that point you lose all the benefit of it being on chain at all. It would take almost 2 years just to onboard every American assuming during that time there were zero other bitcoin transactions…
Most cryptocurrencies have an adaptive block-size mechanism which allows the blocks to grow to a reasonable size which could facilitate such an onboarding of users. So it isn't a technical problem, it is just a question of bitcoin's current leadership, which is controlled by companies like blockstream.