While this is indeed a really great album, the claim that they deliberately tried to do is speculative to say the least. Unless there is a source that confirms this? I wouldn't call 'Don't Talk To Strangers' anti-commercial, a straight rip-off of the quasi-hit 'Bell of Rhymney'. But agreed, as a pop album it is quite introspective and even melancholic for its time. But so was Beatles For Sale?
Well, I thought it was clear that this was an exaggerated way to put it.
But if you take a close look at the songwriting, you will find that in most of the songs the chorus either ends almost abrupt, at a moment when you would think now comes the point from which on to sing-along. Or they don't even have something that can be called a proper chorus. This is very unusual. And it surely is a deliberate decision by the author.
While some of the choruses of the first album sound a bit flat (to me), it seems that Elliott then thought I don't need to do this. The songs are just as good or better without this kind of intrusive grabbing for attention.
It seems that Elliott at that point was quite self-condident, not using any potential hit compositions by well known authors, as even the Byrds did on their first two albums. Maybe a bit too self-confident as the third album shows (is it recommendable by the way?).
I listened to "Beatles For Sale" again recently, and it was a big disappointment. It has a great and cool start with "No Reply", "I'm a Loser" and "Baby's In Black", then it evolves into a quite patchy affair. It could have been a great album with a lot of cover versions, if they'd only gone back to their drive and power of the Star Club days. But maybe George Martin didn't encourage them to do so, and Norman Smith didn't really know how to record rock'n'roll. Even "Rock and Roll Music" sounds wimpy compared to the first Gene Vincent (or Chuck Berry) album. And no, it's not introspective either. The band was probably just burnt out due to Beatlemania. Well, I listened to it when listening to Gene Vincent a lot, and he just sounded way superior to me.
The Butch Engle collection on Sundazed rules totally. And it has a lot more catchy moments than the 2nd Beau Brummels (which doesn't say anything about either's quality, which I hope I've made clear enough now). Maybe Elliott gave all the catchy songs to Butch Engle, because he didn't want them to compromise his own anti-commercial concept?

Just kidding.
I thought it was the Byrds/Buffalo Springfield who brought up suede leather jackets and then the Beatles on Rubber Soul. But this can very well be a misconception of mine. Anyway Keith Richards does look great in one. But then, who doesn't?
Just kidding again.