I dont do, and wouldnt order shrooms.
But everything i've ordered from 420m, I've tried, and it did what it said it would do.
I ordered some Jack Herer blunt from them some time ago, and after smoking it, i felt the way it was described on Leafly, so yes, i would trust what i get from them.
My dude, your story is really just not adding up, my advice to you, would be, try the amount of shrooms you supposed to the take (for a 1st timer) and then decide whether or not what you got was what you ordered.
Also, bear in mind that, everybody's experience on everything differs, what works for you, might not work for the next person, something like 1.5grams could faaark you up proper, but do absolutely noting to somebody else, with that in mind, .5 grams could send you to the hospital with stomach cramps etc. and do absolutely nothing to somebody else.
So, with all this in mind, you need to understand, 420monkeys is running a business, posts like these could tarnish a very good reputation that they've been building up for some time, and all this accusations you are making are unwarranted and the forum members input from REDDIT mean ****, so rather do proper research on an item ordered, before going to the Internet to rant!