This may be true for the immediate future, but we are likely to see more browsers use features like Safari’s ITP to block third party cookies, and that is why the refresh token rotation flow is being rolled out.
To be clear, rotating refresh tokens are not the same as native app refresh tokens. They are designed with browser applications in mind, and have security mechanisms for that use-case. This blog dives into it.
No one is suggesting you disregard security practices to get around pricing tiers. As I described above, refresh token rotation is taylor-made for SPAs, it is secure, and it just so happens to solve this problem.
As for why there is a difference between dev and enterprise features, that is a question for the sales team. You can start the conversation with them using the ‘talk to sales’ button in nav bar, even if it is just feedback and you aren’t looking to upgrade, they are the best place to send that info.