

Can’t possibly be more vulnerable than Windows
The linked article provides many examples where security techniques lag far behind Windows. Vulnerability isn’t as simple as being ‘more vulnerable’ or ‘less vulnerable’, it’s a complex concept, and both GNU/Linux and Windows have design decisions which make each better than the other in various ways. We need to understand security in a more nuanced way than “x is better than y” if we actually want to protect ourselves from threats.
A Linux installation can be set to run root with no password or prompt. A Linux user can choose to never update their software - one could argue that Windows forced OS updates are an improvement here. The argument that the typical user has more technical understanding is a weak defense (as in, we really really really should not rely on that) and also irrelevant when we’re talking about Linux gaining a wider audience.
On a surface level, same. On the other hand, I do believe that more users, if combined with certain design and documentation choices, can enable more contributions and fixes and software support, and I believe this has already been a huge factor in recent improvements to the Linux experience like Proton.