I don't see it either. I also dont have a problem with variable frame rate. 50-60fps just look 60fps to me.

Well with Bloodborne it's a bit worse because along with bad frame pacing, the game regularly dips to the low - mid 20's FPS. 

That being said I'm not entirely sure why playing an old game like baldurs gate would make you less aware of it across the board, especially because it's a slower paced title. 

If I had to guess, the actual reason why people "don't notice it" has more to do with what games have frame pacing issues. I really really think that most people would notice frame pacing issues in their severe form. But when they are minor or barely there, of course they're going to go away thinking the issue is totally unnoticeable. I think I recall Bayonetta for example having some frame pacing issues in Digital Foundry's test, but despite the fact that action games are more negatively affected by frame pacing, the issue wasn't major enough to be noticeable and it usually happened when so much was happening on screen that most players wouldn't be aware of the slight off-ness. The frame drops were the issue in that game, moreso. 

Without the OP listing what games he's referring to, it's hard to know exactly. It could be anything from the game being so slow paced that it's almost unrecognizable, to the frame pacing not being that severe, to simply not recognizing it. 

I don't find complaining about frame rate issues or frame pacing being comparable to nitpicking graphics though, because the former legitimately affects gameplay.

There are many things digital foundry note that mean nothing to be me but I actually notice this a lot in Spyro Reignited and i used to mistake it for the game having bad framerate. 

The Souls/Borne series have terrible frame pacing. It's the sole reason why Dark Souls Remastered is better than the original (everything else is worse in the remaster).

Yeah. I'm with you. There was even a video where they counted screen tearing and I couldn't even see it. If you need a computer to tell you there's an issue or you need to zoom in and pause, there's probably not really an issue.

I have the most powerful and least powerful and I never really notice any shortcomings.

To be honest you probably don't know what screen tearing is if you "need a computer to tell you" ...

I wasn't referring to any specific game in particular, though some games I have played in the last few years that I've heard have it are Doom on Switch, Half-Life 2 on 360, Mario kart 8 on Wii U.

I notice is but can tune it out not to be in focus. It is the change in fps that you notice but I have never really cared about it, just kept playing the game.

What made me tolerant to it I guess is that way is Back in the late 90s playing Unreal Tournament online on dailup 56k modem from Australia on American servers lol. 700ms lag make the frame rate look like is about 5fps lol

The lag in that made it so hard to play that anything that now anything close enough to 30fps is smooth enough for me hahha.

It depends on the game. Racing games and fast shooters like Quake or Unreal make them very noticeable. Curiously, I also see them in strategy games, mostly when I move the map around and the map then seemingly stutters at an uneven speed.

Other than those, hwoever, I normally don't see issues