That would probably be because your instance is different. Lemmy.world has recently blocked VPN traffic apparently because of bad actors uploading CSAM behind VPN. I also had issues with Lemmy with my VPN this week and either need to split tunnel or need to browse Lemmy as view-only.
There are people who are knowledgeable and good at their job. Knowledgeable enough to be experts. Those are usually subject matter experts, including developers.
The issue is that no one can guarantee an outcome or that they’ve picked the right approach.