I love the PS4 from the software point of view, but hardware wise wtf Sony—biggest issue being how fucking loud it is.
The exclusives are the only good thing about it. Everything else is terrible. The controller is terrible, the chargers are terrible, the system constant crashes with errors, the storage system can't count correctly, it's internet explorer sucks, PS Now is a scam, The UI takes too long and freezes up a lot, it sounds like a loud jet engine, I also get errors like when it wanted me to download a system software update but wouldn't let me and gave me errors.
It's an irritating, loud, broken system that is quite frankly overrated because of its exclusives. Without those exclusives, people would realize just how bad of a system it really is and just how incompetent Sony is.
If the PS5 is anything like it, Sony won't be getting my money ever again until Spider-Man 2 comes.
The GBC if I recall had a pretty low limit on colors per spirte or something like that. While the GBC was technically more advanced than the NES, there were very few games that actually looked better than the best looking NES games (like Kirby's Adventure for example). For a good example compare the original Mega Man series to the Mega Man Xtreme duology, the NES games look far better. Really the best looking GBC games I remember were DKC port, Shantae, and the Oracle games I guess.The frustrating thing about the GBC is that it is capable of displaying more colours but so many games stick to looking like NES or slightly updated GB games.
Any multiplatform game on Vita got the 3DS port. Like the Lego titles. They were never the full-scale titles.
Wii - About 1-2 years into its lifecycle, it became clear that this was a console for non-gamers. There were some good games but I think the Gamecube library was just a whole lot better overall. I really also hate the lack of HD graphics which made a lot of games look a lot uglier than they should have on HD TVs.
Wii U - I loved the hardware but then they never really did anything that fun with it? Launching with a third New Super Mario Bros in just a few years was also a huge disappointment.
Dreamcast - It has a great library but I couldn't sell it to a single one of my friends as the common thing I heard was "I'm waiting for the PS2". Then it was on the market and gone in like 2 years so I don't know how you can frame it as anything other than a disappointment?
N64 - The N64 started strong with Mario 64 and Pilotwings 64 but then games came out slowly for it. Most of the games felt very kid oriented and expensive which were two deal breakers for a then teenage me. The Playstation (and PC really) just had way more games that were more my speed.
PSP/Vita - These both kinda had the same problems for me. I was super excited and ready to support a high end portable gaming system but PSP games had absurd load times and the Vita had that memory card fiasco. It's like they could never really get the hardware where it needed to be.
Windows 95/98 PC Gaming - What a shitload of fuck. This era of Windows is actually all the hyperbole that PC gaming haters talk about now. Some amazing titles but thank the good Lord for Windows 2000/XP for giving us a stable platform to play games on.