The cycling lands definitely fill certain purposes within deck building. However, for raw power-level, I wouldn't include them.
If they ever complete the cycle for the fetch able cycling duals, I would immediately consider adding some of the Mountain ones. I could use 1-2 more fetch-able mountains so I can trigger Valakut, the Molten Pinnacle in my 5-color deck.
The dual cycle lands I play because I want more fetch targets. The mono colored ones are only usable with specific cards to me, namely Muldrotha, discard matters, and Life from the loam/sudden Reclamation.
I would not play it for crucible of worlds because unlike Muldrotha it is not an inevitability in the game and as such you might often find yourself relying on a tap land with an incredibly low impact ability that could potentially do something in the future. I would also not play it in Titania protected of argoth because the land does not sacrifice itself so you aren't getting the full effect of Titania.
Watching other people play them for years has shown me that it is never a game breaking card. With that in mind I'll keep not playing them over an untapped basic.