I like that you engage with the lore. But it doesn't upset the balance, so I don't think a balance patch is necessary. The flavour text is really just that, mechanically it's not really a part of it. It's just using the handcrafting mechanic to get slow research progress from science packs to make you a walking lab.
It's a fun way to imagine the hand cranked science works. The workaholic that drinks the weird 'science' liquids, it fits vanilla factorio science packs. But you can imagine that he bangs the rocks together or has a secure miniomnilab in his pocket or whatever else you want that doesn't involve ingesting (even more) dangerous substances, and inspect the results to manually get technological progress fromthe other kinds of science packs. I'm not going to make flavour text included in the mod for all kinds of mod interactions, but we can talk about what the manual process might be here.
You can also avoid crafting the "Technological Progress!" thing when researching things that require weird science packs, or using the settings to make it weaker. The 'drinking' part was never meant to have any gameplay influence.
What do you think would be a good explanation for how manual research is done with DMR packs?