First three shots definitely are Boletus Edulis, although not in the best of condition. I can never remember the proper name of that giant boletus, but whilst it's edible, it's not the greatest flavour... And there's a lot less of it once you remove the pores.
There's no "mushroom roulette" involved once you know what you're doing, and some of those fungi will cost you an absolute fortune in the shops, if you can find them at all. Boletus Edulis in particular is easy to identify, practically impossible to mistake for anything dangerous, fairly common, large enough that you can collect a substantial amount in a relatively short time, and absolutely delicious. Plus they keep practically indefinitely once dried... Really, what's not to like?
I find it very strange that many people seem perfectly happy about eating stuff out of hedgerows, but are terrified of mushrooms... There's plenty of green stuff that will kill you just as stone dead as a Death Cap, if you make a mistake. I'm not as well up on my wild greens, so a lot of it all looks the same to me, but I can tell an Agaric from a Boletus at 20 paces.