> You’d have to know about lazy loading and CDNs, but neither is black magic.

I suppose you've never experienced the corporate hell that can happen with a CDN. The dev could submit a dozen servicenow tickets only to see half of them rejected by those same incompetent non-technical managers, or they could just make the thing work now and move on.

The next project will be better after the dust settles and those rejections have been reviewed and escalated into proper discussions. Nobody tells the story of that project because it does the things everyone expects. Guess who led those discussions and fought to get the meetings on the calendar? The "incompetent" devs of course!