But, I think you can also argue that despite 5e being more similar to 3e than it is to any other edition, I think there can also be room to argue that of the WotC editions, 5e is the one that is closest to 2e. I don't personally think they're in any way closely related, based off the game design choices in each. The only thing that's even remotely similar IME and IMO is 2e's "Kits", but those were both MUCH more extensive and far more daring (for good and for ill) than 5e subclasses.
I remember when I first got 5e, and it did remind me a lot of 2e in certain parts. The main one were magic items. In both 3e and 4e, there was an expected progression of magic items that you needed to have the right numbers, and items were meant to be able to be easily bought, sold, and made. In addition, in 3e the rules for pricing spellcasting items created ridiculously high prices for anything higher than level 1 (because it was based on spell level * caster level), with ridiculously low save DCs which meant you basically couldn't use them for anything offensive. For example, a pair of
drums of panic that can cast a
fear spell (with a different AOE) once per day cost 30,000 gp, which is more than the expected treasure of a level 16 encounter. And the save DC on that
fear? 16. How often are the creatures a level 16+ character faces going to fail a DC 16 Will save? I'm pretty sure that any level 16 character who found a pair of
drums would sell them off for 15k and put that toward upgrading their stat buff from +4 to +6 if they don't already have that.
But 5e doesn't have specific item prices, only very broad categories, and no expectations about what sort of items PCs are supposed to have. At some point they should probably get magic weapons because of all the creatures that are resistant/immune to non-magic damage, but that's it. In addition, bounded accuracy makes low DCs useful for a longer time, because unless a creature is proficient in a save it will stay at its baseline.
The other aspect that reminded me of 2e was how, once you had chosen your class and kit/subclass, your character was basically on rails for the rest of their career – particularly if you don't play with feats and multiclassing (which are specifically called out as optional rules in 5.0). That is not necessarily a good thing, but it does make it easier for newbies.
That's not to say that 5e as a whole is particularly similar to 2e, but
aspects of it are.