In the end I think I enjoyed Sonic Forces overall. For anyone watching, It is true that I did complain about the game when I hit about two-thirds of the way in. And the problems I complained about are still very real. But the last few levels redeemed the game a bit, and I quite enjoyed the final boss. I would have liked more of the boss fights to be as enjoyable as the final one, while I simultaneously might have liked additional attack waves and increased complexity from that final boss. But I could handle a Sonic game that had more fun fights like that.
Sonic Forces does have problems, it's not a perfect game. But I did have fun. Full disclosure, this is the first Sonic game I have played from start to finish. As I have mentioned in past, I am not a Sonic fan. I have enjoyed a romp in Sonic 1 & 2 now and then, playing a few levels before moving on. But the game never really gripped me. I was also a stubborn eleven-year-old who thought Super Mario World > Sonic. Thankfully I eventually grew out of that awkward phase of life and accepted the myriad of great games on a variety of platforms. Unfortunately for me, the golden age of Sonic had long passed me by. So I find myself getting to really know Sonic for the first time in my old age.
Why Sonic Forces and not some other, supposedly better, Sonic installment? Well we can all thank @tylerisrandom for that. More specifically, his review of the game. Did he promise someone like me would like it? No, not in the least. In fact he said:
If you've played any other mixed-to-well-reviewed 3D Sonic game and didn't really like it, Sonic Forces will not change your mind. This is not the entry that brings Nintendo polish to the franchise, it's not a paradigm shift for the series, it doesn't forego the butt-rock theme song, it's still caught in that Dragon Ball Z loop where they have to out-Shadow themselves every other game.
I have dipped my toe into the 3D Sonic world, and I haven't really liked what I've encountered there (now to be fair, outside of Super Mario 3D World I am not particularly a fan of 3D Mario either even despite the fact that Galaxy gave us the best Mario franchise character to date). Given Tyler's warning and my misgivings about 3D Sonic, this should have warned me off.
But he also said:
Each level is about 2 - 4 minutes long. This has been criticized a lot, but I kind of love that none of the levels overstay their welcome. You get a "quick hit" of Sonic.
I like the idea of bite-size Sonic that I can pick up anywhere via my Switch. One reason I never stuck with Sonic was that I didn't own Sega consoles (except Dreamcast) and I would always play sonic at a friend's house. I would like what I played for brief snippets, but would always have to quit soon after starting. So on the one hand I am used to Sonic in little bits, and on the other I finally have a console that would let me experience those bits on my own terms in a very convenient portable package. This was the first thing that opened me to the idea that I might actually enjoy Sonic Forces.
Tyler also said:
I really did go into Sonic Forces expecting to dislike and abandon it partway through, and that didn't happen at all. It's worse than Sonic Mania, but better than some of its more well-regarded predecessors.
Faint praise, but praise non-the-less. And it had me thinking, maybe there is a gem of a game here. The fact that it would be a game I could play in "3 to 5 hours" meant I had very little to lose.
Ultimately Sonic Forces is not an outstanding game. I found about a quarter of the game incredibly frustrating. But both before and after that I did have fun. It was simple and cliché, but it was a decent way to pass some time. However, I did gain something crucially important from playing Sonic Forces. I really like Sonic, and I really enjoy certain aspects of the game play. The ultimate thing I can conclude is that I am up for playing more, and better, Sonic games.