Argumentum ad populum. What kind of experience to those engineers? That matters. Another possible conclusion is that the parent was talking about use cases that are not simple web apps or marketing pages but real issues in large software.
You've set yourself up such that all I need to do is go "I'm developing complex veterinary software including integrations with laboratory equipment" and you're completely falsified. Why expose yourself like this instead of being intellectually humble?
The only reason that anyone has engaged with you here is because you're being intellectually arrogant.
Most of my day job is not about bashing out nextjs websites. In fact if I did that one day a year it would be a lot.