would struggle to do so in one of the new super-small size bags
I’m a big 2XL feller too and I can do a weekend away on a small bag. Shoes, spare pair of jeans, couple of t-shirts, a couple of jumpers. I have an Adidas hold-all which nicely fits into the EasyJet small bag gauge; its squashiness helps.
Although my experience is that gate staff don’t generally bother with hold-alls, they’re on the prowl for the trolley bags. And every time I fly EasyJet there’s at least one person who gets charged the £48 gate fee, usually only by a couple of centimetres and usually because the wheels won’t fit into the gauge, so no wonder the gate staff focus their attention there.
It’s not people being stupid either. I have a small Dunlop trolley bag whose advertised dimensions should mean it fits in the gauge. It doesn’t, though, by less than half a centimetre. Luckily I found this out at IOM airport with a spare rucksack in the boot of my car, so I switched over and left some stuff in my car for later.
But if I want to bring anything back with me then I need a hold bag. And, living on an island, shopping opportunities are more limited, so I do tend to bring stuff back with me.