Don't judge the army based on your first unit

This is kind of a tangent/thought experiment but why do long haulers in the army constantly give this advice to people who aren't far along in their career?

I mean objectively most people don't change units in the army until they re-enlist after their contract is up so essentially their telling these guys and gals to gamble another 4 years to potentially have a better unit. A unit that can also be shitty as their first or be good until leadership changes out after a year and become shitty again.

I don't know, I feel like this advice is a meaningless platitude that people say without much thought behind it or with subjective bias that is not applicable to anyone else.

I think that this advice should be refrained to what can you tolerate about the overall structure of the army vs what you can't. Do you enjoy having autonomy or are you fine with someone have a significant say in your life? Does stability matter to you more than say family life? Are you willing to be responsible for the welfare of others or do you want to focus on yourself instead?

I feel like this is a better way to frame the mindset. Since these factors don't really change from unit to unit and it also doesn't rely on random individuals you meet throughout your time in the army.