And what was your point in invoking the Lichess database if it doesn't actually support your point?
Here was my point:
It's not specific to the sicilian, but the sicilian is the worst example by far.
There are a million sidelines that white could use before they even enter the najdorf: GPA, 3.Bb5+, closed sicilian, morra gambit, wing gambit, alapin, delayed wing gambit, delayed alapin, 2.a3, 2.Be2, 4.Qxd4 etc.
Almost all of these have 1 thing in common: if black plays all the most natural moves at amateur level he is either much worse or losing straight out of the opening.
So let's take a look at the stats:
at the sub-1600 level on lichess, following all the most common moves for black:
2.a3 sicilian leads to completely lost position for black before move 10 (2.a3 Nc6 3.b4 cxd4 4.axb4 Nxb4 5.c3 Nc6 6.d4 d5 7.exd5 Qxd5 8.Na3 e5 9.Nb5)
Morra gambit leads to forced mate on move 9(!) - (2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 d6 6.Bc4 Nf6 7.e5 dxe5 8.Qxd8 Nxd8 9.Nb5 Kd7)
Wing gambit leads to completely lost position for black by move 10 (2.b4 cxb4 3.a3 bxa3 4.Nxa3 Nc6 5.d4 e6 6.d5 exd5 7.exd5 Ne5 8.d6)
Alapin leads to black hanging a piece on move 7 (2.c3 Nc6 3. d4 cxd4 4.cxd4 e6 5.d5 exd5 6.exd5 Ne5 7.Qe2 d6)
Of course, black could easily avoid these by preparing a line against each of white's tricky sidelines, so, I will reiterate:
IMO, sicilian players at the lower levels need to choose between spending twice as much time as their peers sudying openings (to learn a line against all of white's sidelines) or they can play without theory and should be ready to lose lots of games where their opponents didn't even have to think for themselves the whole game and just 'rinsed and repeated' the same trap they have used 100 times.
A scandinavian or modern defense player could probably play 1000 games and never lose like that once, but it happens all the time in the Sicilian, even at my level.
Ok, I'm done arguing with people less than half my rating, but I'll leave with this video from Aussie GM David Smerdon. In the first few minutes he talks about the pros and cons of playing the Sicilian Dragon, but the same can be applied to the Najdorf. This perfectly captures the way I feel about this topic.
ie, at around 5:50 he says "you're going to have to be a very broad player to play the sicilian dragon, because you're going to have to play specialists on their own turf".
https://www.youtube.com/watch?v=m2QMY_J4nzM
He's going to say that because he's only seeing it from the perspective of a GM so he's assuming the opponents will be on the level of GMs. It doesn't consider the amateur level and that amateurs, such as ourselves, will be playing against other amateurs at our own level. It's unlikely that they will have extensive GM knowledge of the opening.
In the words of IM Andras Toth "You can't play the Sicilian because of the 1300 with their extensive knowledge of Najdorf theory? Unlikely."