Whether or not Wizards should get rid of the reserve list, it remains a promise that they made and have now... not precisely broken, but danced along the edge of breaking, in a blatant short-term cash grab. Even if you think the reserve list ought to go, I doubt you'd consider gold-bordered boosters at $250 apiece to be a good way of doing it. That's not addressing the problems the reserve list causes -- it's addressing the problem of "How can we, Wizards, snag some of the cash locked up in those cards?"
And from what I can see, the result was a reputation-damaging failure. I think their moves around D&D are likely to end the same way.
So, yeah, I agree with the overall thesis of the thread. Wizards has always had a healthy regard for its own profits, but they used to keep an eye on the long term, which meant nurturing an ecosystem of partners and customers who would keep growing their bottom line, year after year. Now they have begun turning on that ecosystem and trying to grab all the money in sight. It won't end well for either game.
I'm actually more worried about Magic than D&D. D&D has been through a lot, and the TTRPG community is strong and has the means to fight back against WotC's predation (thanks in part to the wisdom of WotC's past leadership). They can do a lot of damage, but I don't think anything Wizards does can truly kill D&D. But they absolutely can kill Magic.