The whole "anyone who does things differently from me/the way it's done where I am is wrong because there's only one proper standard for everyone everywhere" mentality is so weird to me. I can't figure out if it's lack of intelligence, or just having had limited experience of life and the world outside of their bubble.
All of those jumpsuits would be completely fine and not remotely raise an eyebrow in my industry. In fact they'd probably be considered rather on the formal side, as my industry tends to skew very casually (ripped band t-shirts and either jeans or sweatpants). It's not usual to see famous industry leaders making 7 figure salaries in sweatpants or jeans. I usually wear either strappy or backless tops/dresses when it's hot, no one looks twice.
I wore these to work today because all my other shorts were in the wash, got some jokey comments/compliments but certainly not considered unusual or inappropriate for my industry. https://www.next.co.uk/g884627s2/c32128
Obviously there are tons of industries and workplaces where bare shoulders would be considered inappropriate, but only you know what the norm is in your workplace, OP.