Monk getting a rework late in the expansion more speaks to the fact that Monk had serious issues that went unaddressed for six straight years on top of a pandemic delaying the development cycle more than the devs desire to fix it in a timely fashion frankly. Basically every problem that was "Fixed" during 5.4 can be traced back to Heavensward or Stormblood. Tornado Kick has been useless since its introduction in 3.0, Brotherhood not proccing off casters was a problem since 4.0, Monk's recovery being insufficient compared to other jobs have all been problems since Heavensward. If the pandemic didn't happen I'd bet that they wouldn't have made the decision to axe Greased Lightning, which itself wasn't necessary, and many of the changes they made actually exposed many of the other shortcomings of Monk's design, such as making overflowing Chakra a bigger issue, on top of leaving it without any central mechanic.
It wasn't the devs prioritizing Monk over anything, it was them scrambling because Monk has the worst history of the devs even bothering to try and address player complaints out of any job. Like, it still has the Fist Stances for gods sake, a series of stances that people have complained about being "Set Fire and forget" since A Realm Reborn. That's genuinely absurd.