To simulate a semblance of transparency for regulators worldwide, Google has been publishing a list of relevant ranking systems (often called ranking factors in SEO circles) for some time.
A recent update removed Page Experience from the list of current systems and Mobile Friendly, Page Speed, and HTTPS/SSL from the retired factors list.
Does the change leave you with a bad aftertaste? You are not alone.
The fact that Google also states that Page Experience is being removed from the list because it’s more of a “general concept” than a specific ranking factor doesn’t help matters.
In the end, what remains is that Google only has its own interests. If communication and supposed transparency serve these interests, Google will happily continue to use these tools. However, the SEO industry should continue to take a critical look at statements made by Google about supposed ranking factors.