Tons of SaaS companies offer open source projects free periods or a limited hobby plan for free. Claude is offering a professional plan 20x'd for a free period. I don't see anything wrong with that. This is a far more resource expensive service to offer for free than 99% of SaaS companies.
This potentially can be a supply chain attack at a massive scale.
Yes, at the very least, it's a no-brainer for OS maintainers who are already paying for Max 20x.