All the various things available right now have almost no impact your characters power, apart from soul-ash for your legendary. You can get this soul-ash in an hour or less from Thorghast, that is if you're not lying about the level that you play at. Everything else is optional and can be done at your own speed.
If you played BFA, then you should realize that there is a whole lot less mandatory stuff needed to be done this expansion compared to it. The mandatory azerite level farming was more work, same with the essences, benthic gear and the corruption gear farming. So if you're still complaining after realizing that, it's because you WANT to do everything in combination with Mythic raiding, and not because you MUST do everything for Mythic raiding.