For those who weren't around back then: The 2009 aero regs introduced multi-element front wings. These new wings allowed for significantly more downforce allowing for cars to handle more power before losing grip. However, when an attacker got within a second or two of someone they'd start to lose all that new grip and power due to dirty air. This was a tremendous disadvantage to an attacker to the point where faster (on paper) cars would just get stuck behind slower ones.
Two years later in 2011, DRS was introduced to "promote passing". It didn't directly reduce the dirty air, but it gave enough of an advantage to an attacker to offset the disadvantage of dirty air. This was pretty controversial initially with some calling it "push to pass", but over time we have mostly either become used to it or it is the only thing we've known.
The new 2021 aero regulations have been very successful in cleaning up dirty air. The disadvantage to attacking has been significantly reduced as they can get much closer before losing all that grip. Rather than reduce the advantage of DRS to compensate, the FIA has been adding in additional DRS zones. They have now reduced the advantage to slower cars, while simultaneously increasing the advantage to faster cars. This is just exacerbating the already existing performance gaps between teams and I'm pretty sure we all want the grid to be more competitive.
In my opinion, this is causing the grid to spread out and settle into position too early on into races. The remainder/end of races are fairly boring unless something chaotic happens like weather or a safety car. Desert race with long straights? :yawn: DRS was a quick and easy solution, but I think the FIA should be reducing DRS zones at a minimum, if not just remove DRS all-together.
tldr; DRS was a bandaid. The FIA should also reduce/remove the bandaid now that they've reduced dirty air.