It is generally amusing to see a bunch of people discussing a "problem" with healing in the game, when I am also aware of how few of those who "have" this problem actually play with the 2024 rules.
Is the new healing in 2024 too much? Short answer: No.
Longer answer?
I just recently finished the halfway point of a campaign where I was playing a 2024 Trickery Cleric from the playtest. That meant that from level 3 I could project a perfect illusion (which absorbed many attacks) and I was using the new healing spells. In most of the fights we were in, despite the DM feeling like we had no chance of losing, I had usually spent most turns barely keeping one or more characters alive and in the fight. Our final fight ended with my character dead (revived with a plot item) after every single party member but one making multiple death saves, AFTER we used the Stronghold powers to have even more abilities (and I had even more healing) AND we had gotten more magical gear.
And, while it might shock you to consider, despite being players of the newest version of DnD, our group did not rip open our armor, beat our chests while screaming the name of The Great Leroy Jenkins, and charge with butter knives bared at the enemy. In fact, one of our missions went so well in terms of the tactics that not only did we win with no injuries (maybe one if I'm misremembering) but we had also manuevered in such a way that the DM declared the freed prisoners backed with us would overwhelm the completely unprepared fort we had infiltrated and take them out with minimal issues. And that was not the only stealth mission we engaged in.
So, the next thing that will get leveled against point declaration that, no, there isn't a problem here, would be that the DM MUST have done something untoward, because if he had followed the rules in the books then this would have never happened. Except, I asked him. He rarely homebrewed. He did use some 3PP materials, but I have the same materials, and I use those same materials, and they really aren't much more dangerous than the 2014 rules. Oh right. And the 2024 monsters have not been fully revealed, even as we do know from the DMG that the XP budgets are significantly bigger than they used to be.
Now, yes, if you want 5e24 to play exactly like 2e, using game mechanics and tones that haven't been in the game for 25 years or more... it doesn't do that. But that isn't a problem, any more than Dr. Pepper not tasting like Orange Fanta is a problem. And if you feel like you as the DM have to put in a little bit of work, to get the effect YOU desire (because, I do notice that I've never seen a single person get on these boards and say "as a player I feel like the game is to easy when my DM runs it, so the rules should be changed") then.... yeah. Maybe you do. But I'm not really incentivized to remove a great change to the game to appease a group of people who have no interest in actually playing the game unless it was designed to be exactly like the game they are already running, so they don't have to do any work.