I don't believe the bloat of modern websites is because of ad-tech of dark patterns - all of these can still be done with an otherwise lightweight website. If anything, ads (excluding intentional resource usage such as crypto-miners) would be much lighter than what a typical SPA website like Reddit or Twitter is.
I believe what's happening is a broader trend in the industry of building engineering playgrounds and doing engineering purely for engineering's sake to benefit one's career - a positive feedback loop where not participating puts developers at a disadvantage as they won't gain over-engineering skills that companies now require (they require them because their developers or managers want them for the same reason).
I believe what's happening is a broader trend in the industry of building engineering playgrounds and doing engineering purely for engineering's sake to benefit one's career - a positive feedback loop where not participating puts developers at a disadvantage as they won't gain over-engineering skills that companies now require (they require them because their developers or managers want them for the same reason).