I suspect that they’ll so just about anything to avoid reintroducing university fees of any kind. It is something that keeps families who might otherwise move within the UK in Scotland, and it would involve such a huge climb down.
And… it would most alienate younger people. The SNP (and the greens) are very heavily reliant on them. And even more so on the perception of being much more in tune with younger generations than all those stuffy UK parties.
Free prescriptions may matter less to the young (except the kind of unfashionably disabled younger people that ‘social justice’ movements don’t seem all that keen on) than to older voters (including the sort of middle aged voters who are having to deal with care issues in their parents, as well as their own children).
Both prescriptions and free school meals are probably quite easy to frame as ‘well it was just benefitting the middle classes anyway, so it’s much more progressive to stop doing that. Here’s something shiny and on-the-surface social justicey instead’.