By spam I mean data included in the blocks that is not relevant to the financial use of Bitcoin as money. For example timestamps are not spam, whereas BRC-20, ordinals, images, media files are. How might I accomplish that (be it through bitcoin.conf or some other tweaking), in Bitcoin Core so that my Core Lightning node that depends on the former would be still usable?

I am not just asking for simple prune=<number of mb> in bitcoin.conf as it according to my understanding targets only old blocks and gets rid of them entirely.

If there is no such solution as of the latest release, is there something in the works?