I think the characterisation of the video in the OP being pushed out merely as a means of selfishly chasing clout is a grossly unfair one. D2EA has produced a number of resources that I've found useful as a player of Elite Dangerous, including a guide to the Guardian sites and a no-engineering Type-9 laser mining build that not only got me to engage with the mining part of the game, but which I've also since modified to more closely fit my play style. My impression is that he made the video because he cares about a game he's put effort into.
I don't think it's unreasonable to ask for more focus on other areas of the game. Since I started playing in September 2022, pretty much all of the updates since have been focused on AX combat, which is a highly specialised subset of PvE combat, itself but one facet in a broader game. When I first looked into it, I was disappointed to learn that meaningful participation in AX combat requires the use of a relatively small selection of weapons and modules, forcing players to use a much more limited range of ship builds, and seemingly imposing the same kind of narrow meta nonsense that makes PvP unattractive. Now personally I still consider myself to be in the discovery phase of playing this game, but this game has been around long enough that such beginnings are going to be long over for many players. Now maybe FDev have the metrics which prove that AX combat is a big draw in this game, but without them confirming it's just speculation, and any others players who don't engage in AX might feel left out, perhaps justifiably, perhaps not, FDev are remaining their usual taciturn selves on this.
New ships would be a good example of an addition that would have a broad appeal to the player base as a whole, I don't see how anyone can reasonably argue against that. D2EA suggests new multi-role vessels, but I think a better approach would be specialised ships that cover the three most basic competencies of the game; Trade, Exploration, and Combat. I would suggest the Panther Clipper and Thargoid-Human hybrid vessels for exploration and combat.
From the sounds of it, D2EA might not be completely aware of the technical reasons behind the 15 minute delay between plotting an FC jump and it actually happening. I myself was vaguely aware that there was something like that going on, but I had no idea that said technical reasons are why 15 minutes is as good as it's going to get, and that it's also why the the 15 minute wait comes before the jump rather than afterwards.
I know that FDev is generally opposed to automation, but having just made my first deep space jaunt with my own FC last weekend, I agree that it's a pain in the neck that we can't plot a series of jumps. Even if nothing else was changed about FCs including cooldown periods, being able to plot multiple jumps at once would be a worthwhile QoL change for Fleet Carriers.