Yeah, I generally agree with this, Luke...
Incidentally, I will say, I always see Load/ReLoad paired up (rightly so, in a way, since they were quite literally the product of the same sessions) but, honestly, the difference in quality in the first vs. the second is pretty staggering, imo. I don't love all of Load, but there's some great songs on it. I wouldn't overstate how "original" it was - I mean, it was pretty shocking for Metallica at the time, but it's not like the style hadn't been explored before, by a bunch of other bands. Regardless, at least half of that record, taken for what it is, is really good. ReLoad, on the other hand, might well be my least favorite Metallica album. A LOT of it is just unbearably plodding and unmemorable, to my ears at least.
Back to the risk-taking...Death Magnetic was obviously a conscious effort to go back to a more thrashy sound and, as many have observed, it inevitably sounds a bit contrived. There's definitely some good material in there, and overall I enjoy it. I do think, though, that the band at that point had lost the "tightness" that's kinda required for that type of sound. They were never the most technical band, of course, but while James is always James, the, um, "looseness" of Lars' playing, to me, is quite detrimental there. I said it before, so it's clear - 80s Lars is a BIG favorite of mine, so this has nothing do with being super-technical or anything like that. It's just his current approach, even in the studio, that doesn't do it for me.
Hardwired...however, for me, was Metallica being more comfortable in their own (modern) skin. It seemed to me many of the songs felt unburdened from having anything to prove. Moth Into Flame and Atlas, Rise!, in particular, are two of my favorite of theirs from all the way back to the Black Album. Riffy, punchy, dynamic songs, that could be both hooky and aggressive, the same (but different, of course!) way Metallica always was, even when they were a thrash band. Spit Out the Bone is another one - sure, it's faster and "thrashy", but in a way that feels "Metallica" without truly sounding like old Metallica. As usual, it's a very imperfect album...if it was just the songs from Hardwired to, say, Confusion, and then skip to Spit Out the Bone, it would be a borderline great album...but the stuff in-between does bring it down a bit...
...which brings me to 72 Seasons...I think, as Tim and others pointed out, this is another album where Metallica feels pretty comfortable where they are. But, for me, the songs are not quite there this time. A lot of it does sound like the plodding second half of Hardwired. There's some decent stuff, and James sounds pretty great, but overall I was quite disappointed. Case in point, after giving it many chances (as I always do with Metallica) when it came out, I have rarely revisited it since.