Error loading mods
Failed to load mods:
• Rocs-Hardcore-Demolishers
• Incompatible with Rocs-Hardcore-Cargo-Drops
• Rocs-Hardcore-Fulgora
• Incompatible with Rocs-Hardcore-Cargo-Drops
• Rocs-Hardcore-Gleba
• Incompatible with Rocs-Hardcore-Cargo-Drops

Per various mod descriptions and changelogs, the version of each of these mods has been bumped as they now use a different system for restricting cargo drops.

So if I turn off Hardcore Cargo Drops, then I should be able to load my in-progress game undamaged and cargo drops will still have a restriction of some kind?

Yes. The restrictions are then removed when you research the tech.

It took the special cargo pod recipes away but now I can't make any cargo pods at all.

You should no longer need the cargo pod items?

Oh, you mean I don't need a cargo pod to drop supplies down in vanilla?
edit: From wiki:
Cargo pod
Cargo pod can't be crafted, it can only automaticly spawned by space platform
Ah, I see! Sorry, I did not play vanilla Space Age before I used your mods.

Maybe exists some way to keep burning cargo pods work with Hardcore modpack (via settings or smth else) ? The vanila free space logistic is depressing =(

That's fair feedback. Hardcore should be kept optionally compatible with this mod. I asked in Discord if anyone has time to contribute that fix.

I agree that cargo pods should have a cost, but I'm not in a hurry to get it modded in because of how poorly the UI handles it; I keep spending a whole cargo pod on one item. I would be interested in a mod which implements cargo pod items which are more user friendly, such as not launching automatically and instead giving me a launch button.