sure. But note also: * They can ask for a proof * People doing this have talked to literally thousands of people. So for most candidates who try to pull shit, it may be their first time and may have single or maybe low digit interview experience. But on the other side, it's literally multiple thousands of people. So they have built a shit detector
I'm not entirely sure that's enough. I think it's not possible to lie about technical stuff, but someone charismatic enough may be able to pull this off.