I think 'a load of old tosh' is a bit rude, personally, but no you are not the only person to think or say this. There are lots of people just as rude as you around!
DD was weaned entirely on finger food (and other things that might not be traditionally eaten with the fingers but are perfectly possibly to get into your mouth by that method if you have at least one hand that works). This is because two weeks after I started weaning her by the traditional purée route, she flat out refused to have a spoon put in her mouth by me or anyone else. The alternative to BLW (only I had never heard of it and had to make it up as I went along) would have been sticking with milk until she was able to use a spoon at about a year old, which I don't think would have been a good idea.
She ate rice, vegetables, pieces of meat, pieces of fish, fruit, pasta, toast, dips, yoghurt, porridge, potatoes in various forms (not mashed, she still loathes anything puréed or mashed at five years old which may have been why she was so against being fed with a spoon), bread, popcorn (homemade, not salty or sugary), polenta, cereal, cheese, basically anything you can think of that a healthy adult with no weight issues would eat apart from ready meals or takeaways. She also ate about twice as much as she had been doing off a spoon. As she was very small and slight, I was completely delighted that she was eating so much more. And she eats really well now in terms of variety if not quantity, though obviously she's been through her fussy phases just like any child. Actually, at six months, she was probably the unfussiest child I've ever met. She'd eat salad leaves, cabbage, spinach, asparagus, olives, all kinds of things that would have been unlikely to make it into purées. She did gag occasionally in the early days, but was not in the least bothered by it and I don't think she ever gagged at all after seven months. She did sometimes spit things out but that's not a risk confined to BLW. Nor was she messy - at least no messier than any other baby of under a year that I have seen eating. A bib is a pretty good idea for all of them. We'd abandoned a bib by about nine months, though. She didn't like them either. But as she was perfectly able to eat a meal without getting it down her front by then, it didn't matter.
As she was eating steak and whole chicken drumsticks shortly after weaning, I was not very worried about iron.
However I had plenty of friends who were very happy with purées. I'm pleased to say that I never felt the need to question their choices and they were happy to see that my daughter was eating after the worry when she refused to have a spoon anywhere near her.