"for a lot of models" is a bit of an exaggeration. Especially as Xiaomi/Dreame try to actively restrict Valetudo use.
But yes, Valetudo is a great project. I'd just wish there was a manufacturer who would openly endorse it.
I have now used Deezer for a bit over half a year after Spotify.
The song selection is pretty equal. The playlists can even automatically be imported/exported with TuneMyMusic.
I think Deezer's best feature is the song radio which finds songs of similar genre, and it really does find songs and artists I have favorited after hearing them. I always found that feature in Spotify to work pretty poorly.
However, if you don't have an exact song in mind, finding music by theme is terrible in Deezer. There are few set categories, but the amount of user-created playlists is very small, compared to Spotify.
I'd recommend giving it a try, but I wouldn't say its better or worse than Spotify. Just different.
I've used the following blog post as a guideline for teaching my 1 year old how to behave with pets.
To summarize, teaching the child to respect the boundaries of the pet (instead of trying to actually play/care of the animal), will make the pet NOT afraid of the child. That in turn allows the pet to choose when to interact with the child. Turns out, at least in our case, the relationship between the child and cat in our case, is very similar to how the adults interact with the cat.
https://dogsandbabies.wordpress.com/2011/01/24/mamas-dont-let-your-babies-get-magnetized-to-dogs/
If you read the article, the main point was that Spotify doesn't inform about the limits clearly. Not the pricing.
Even now Spotify site says: "Spotify Premium: Listen without limits". Clearly there is a limit, but the limits are only mentioned after the first subscription button if you scroll far enough.
They were a bigger deal. I started learning Japanese when the first Iphone came out and spent quite some time in Japan when the Android phones were a new thing. Internet on the phones was very limited.
Dictionaries existed on the phones, but the usability was non-existent. Even worse if you had to look for a word you didn't know how to read.
The electronic dictionaries had great writing detection and cross-referencing between language and informational dictionaries etc. At the time they were awesome. One electronic dictionary could contain dozens of dictionaries of various topics, which probably was convenient for Japanese themselves (and not just language learners).
Of course nowadays you can do the same on a phone, but there was a period when you couldn't.