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I feel like this sort of idea is one of those that sounds great until you actually start to think about it.

If you publish your algorithm, you are giving interested parties the instruction manual on how to game it; spammers and propagandists can use that algorithm to make sure their content gets to the top.

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Instruction manuals make it easy to game it but people can still game it without an instruction manual. This seems similar to the idea of security through obscurity. The same argument could be made about linux, right?

Letting people see into it could make it easier for people to learn how to game the system but it could also make the system harder to game in the first place.

The "security by obscurity is bad" mentality works in cases where issues are easy to fixed when identified. Most bugs fit in this category. It's doubtful this applies to recommendation algorithms. If you know which factors are most important in making a post go viral, and a bad actor exploits this, how are you supposed prevent them from doing so?

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