With bass it can be tricky to say who is a really good player just from the records. depends a lot on the style of music and what the band is going for. Primus is centered around Les Claypool (who is absolutely amazing at bass don't get me wrong), or RedHotChiliPeppers with a strong rhythm-oriented music and just a guitar and drums leaves a lot of room for basslines. but you gotta give it to Mr. Flea, he makes the absolute best of it (Like the bassline of Around the World is creative, sounds great and is technical to play). it's also about musicality and "staying in the lane", can't just jerk off the craziest bass-attacks over Runaway Train for example. Flea is also good at that (check the verses of Otherside, first verse is just the basic notes, later he pits variances onto it), really musically sound (I'm saying that subjectively as listener and fan).
Sometimes, too much stuff from the bass is not wanted. Like the guy from Nirvana could be really Michael Jordanesque in his playing but it would never show because it doesn't make sense to lay it down to Nirvana's intentionally simplistic music. Or the guy from Guns N Roses. He's just playing to the music, which is good, it's music, not a penis size contest (there Les Claypool would).
What I always held in high esteem about Cliff Burton was that he made the case for bassparts in the songs and didn't always play 1:1 on what the guitars were playing. Shame he didn't get to record more bass solos. Or another example: Rex from Pantera sometimes plays the guitar riffs on bass which is hard to do but it doesn't sound cool and I cannot really name songs where the bass is evil and demands authority and plays something unique.
Or look at Fieldy from KoRn, who brought a completely new sound. Or Lemmy also put the bass out there, even with distortion. but his stuff is not as 'hard to play'.
Then you got guys like Billy Sheenan who is all about playing as many notes as possible and that's his thing. But you can't compare it against a guy who plays live, with, say, a bigband or reggea amd really comforts the whole groove, plays some notes louder, some quieter and just gives a good feel.
I didn't watch the video. Or I think I did watch something like it a few years ago.
What I can say with confidence though is that almost any solid professional musician can whip out all that stuff that you hear on records and then some.
That's why I would say it's hard to say who is the best guy like in sports maybe. not every style of music requires the bassist to shine. but some guys like Cliff make it happen anyway. And Geezer Butler from Sabbath. Fuck...
For guitar it's even harder (minimum one page essay LOL) but David Gilmour shows a completely different skillset than the guy from Manowar. but I bet both guys could play the other guy's stuff easily as they are pros. Paul Gilbert can play anything on guitar but Tommy Iommi wrote the wayyyy cooler riffs.
So there's that LOL. No opinion given and couldn't watch the video. But I like the topic!
Personally though I think Flea and Cliff Burton were the guys I was going for most when learning bass. And music that has walkingbass. And Geezer Butler from Sabbath is the man.
p.s. I also saw a live video of Metallica where CB plays super untight and it's a mess. If he was always like that live then that's not even top 20 because it diminishes the music. But he could have been sober and hungover so I'll give him a pass