Sorry, it seems that now, with all these people who are no longer able to get by other than with organized tours for any basic activity...food tour - walking tour - wineries tour - off the beaten track tour - monasteries tours - tasting this and tasting that tour, the local producers who did this for free a few years ago understood how to make money easily.
I see that Terra Grazia in Naxos, which was just a small new biodynamic vineyard 5 years ago, is now doing the same thing with tasting tours at €75/person!
Try going solo anyway:
https://maps.app.goo.gl/vtPoEqQQLPfMjodU6
All this is a shame
We were on a Greek island 15 days ago, we visited a vineyard and tasted wines without asking anything in advance, we also stopped by an aromatic herb producer who showed us around his garden and we tasted lots of incredible things made from its herbs
https://photos.app.goo.gl/TVrLve8MLfdSbo3SA
https://photos.app.goo.gl/GPyJq3HeuUwGwp3F8