My experience is that they provide decent hardware with clean software that doesn't get updates as often as you would hope. Most end users don't really seem to be all that interested in updates, though. They may not always be the fastest phones, but if they work for you, they will for years.
That said, they do seem to provide long-term security updates for their more recent models: https://eprel.ec.europa.eu/screen/product/smartphonestablets...
They also make some pretty cool niche devices. Phones with massive batteries, for instance.