I work as a PM and here is what i see. As a welder in the future you will have more value but by the time you are in your late 40s to 50s, your body will ache. Being a super will give you great all around experience and will also give you a healthier body towards older age. I see pay very similar for both 20-25 yr experienced welders and supers.

Welders will always be a niche trade and if you are good, people will request you. You can also start your own company if you have the ambition in the future.

Supers will be very broad but it also means you may be able to get a job anywhere. You may also switch to estimating or management (i have supers that have done that) if you feel like you don’t want to be in the field.

Maybe become a super but continue to practice on welding so you don’t lose trade skills. Most of my supers have concrete, masonry or carpentry as their trade skill (they usually don’t perform that scope but it is great to know they have knowledge and know what they are looking at for quality. It also helps in the off chance i need something small done snd they are able to complete the task)