Question: Is the Bowdler Attack slightly inaccurate?

Time and time again as a beginner on chess.com (With an intermediate-advanced rating on other sites), I see the Bowdler attack played very often. With my opening knowledge, I think that this is slightly inferior to other moves because the bishop in c4 gets kicked sooner or later by the d5 push supported by e6.
I am mentioning this because most usually play theory in other openings, and they generally do very well in the opening. The Sicilian is where they are most lacking somehow. This is strange to me because it is one of (if not the) popular openings in chess! I would like your input maybe.
One other thing I would also like to mention is that in the Grünfeld, almost nobody goes for the Exchange variation followed by e4, even though it is THE main line. The Grunfeld is not rare - top names like Ian Nepomniachtchi, Peter Svidler and MVL play it. Initially, I had the impression that top players had a lot of influence in chess players everywhere. I am still surprised that some don't even know what the Grunfeld is asking from the chats!

But perhaps my problem is that I like openings too much and my tactics are too weak, since you can survive on purely the London System and Giuoco Piano - you don't even need to bother with theory too much. Maybe that is why they don't know as much theory, simply because they don't need to and I am simply an insane person for looking at useless opening lines.

It is inaccurate. However, it may be hard to prove at under 1600 rating. Black equalized, but nothing more, you cant expect to run over white because it won't happen. This is why it is never seen at pro games. You mentioned that the bishop will be kicked which is correct. In almost all Sicilian the light-squared bishop is weak and having trouble finding a home, this is also why it is inaccurate to put the light-squared bishop on c4 so early. Black will play e6, Nf6, and aim for d5 with equal chances.

You are completely correct, @whatisthisline. People around the U1500 range usually don't know what they're doing, sicilian-wise, especially if they're not a Sicilian player. Bc4 simply is bad because d5 comes with tempo. 

easiest way to penalize it is 2.e6 and 3.a6, white may be able to stop b5 or d5, but not both. the white bishop ends up passified with a tempo for black, so he has at least equalized.

Harsh to say but its just garbage. Crazy how it has name but its just bad. Black can already think of playing e6-d5 and just questioning this whole idea of playing the bishop on that diagonal. 

Bowdler attack is ok, U can't penalize it, only equalize (as U said).

every opening is slightly inaccurate

Yes. It is.

How could every opening possibly be slightly inaccurate? There must surely be at least one opening that is played perfectly.

idk about that 🤔