They should label this "rock/pop", no Stevie Ray Vonn, no Neil Young, no Rory Gallagher, no Johnny Winter, no Queen.
It never occurred to me, "Day Tripper" almost sounds like it could have been lifted a bit from the "Pretty Woman" riff.
Even if I have heard the song hundreds of times to where it loses it's initial hook, I don't think any list of 100 rock riffs can be taken seriously without listing this one; especially for the time it came out.
I'm sure something by the Who could be listed, mainly "My Generation" but perhaps others.
I'd say the list is trendy and modern, I may not be the biggest fan of the song myself, but "Inna Gadda Da Vida" left out? There are probably many more omissions one could think of.
"Blitzkrieg Bop" even, I'd take over some of those listed. Not sure if Ten Years After "I'm going home" is on there, that is another one to consider.
So, I'd grade it, a hoser list.