The docs don't appear to reflect the current state of the mod and need some updates:

The quality condenser is roughly similar, set a target quality (or leave it uncapped)

This is confusing / does not appear to be how the UI works now.

For example 100 items times 12.5% quality

Not a great choice to lead with an example that is not reachable with default settings, similarly it refers to placing multiple modules later on.

After researching (which is free)

It is not free, there is now a token science pack cost.

(note that you cannot put items in the machine from the crafter gui, use inserters/loaders)

Doesn't appear to be true anymore.

Higher qualities of the machine itself are faster and have more upgrade slots,
note that beyond 100% quality there is no bonus, so you could use speed modules then.

"Upgrade slots" needs some explanation, originally I thought this meant module slots as its not at all comparable to a recycler with only 1 slot (that discussion is best left for the other thread).