There's a big difference between "this vaguely might be construed as deterring competition" and "illegal according to anti-competition law". Razor blades, the namesake of "razor and blade business model" has existed for decades without successful legal challenge, for instance.
Actually blades cost pennies and there is no vendor lock in. I assume they are talking about some sort of cartridge head razor.
It probably could? I was just talking about the waste aspect.