Yeah the known issue with raws. Whatever fits your body man, i'd definitely throw any stuff that i can't handle well. Sometimes pain is subjective, if you keep pinning and besides pain you have any sort of allergic response then throw it away. Sometimes guys have allergic response to pharma, for example with sustanon or aburaihan test E, it's from the carrier oil. You better try one brand and if it's g2g you stack some xD
Because science is progressing, it's not a constant we all learn and stick with it and i'm pretty sure some things remained the same for the last 40+ years but many changed in the process. Maybe it's about time to try a new method, more promissing with better results (less fluctuations, less aromatization, no scar tissue build up etc) and easier to use.
You're right about the rise of people complaining, and guess what..if this trend continues to grow more people will post complains, it has some logic as it's something new. I'm pretty sure most of us starting with gear, our first 5-10 shots weren't the best. Most guys experience pain, maybe bruises, nicked veins etc. You rarely see someone complain because they new it before they start, and when you see someone complaining about horrible IM pip most of the replies are "it's a virgin muscle, you'll get used to it" but when someone has a lump from subq "it's idiotic, vigorous steve full of shit, fuck trends bring the ol 18G harpoon and grow a pair.."
I fucking hate absolutes and i'm not trying to convince anyone about what's better. I really don't know what it is, i just don't like seeing short sighted guys in a field that constantly changes.