Example from this review: https://itsfoss.com/news/pinephone-review/
"As a result, users of it are subject to Ubuntu Touch’s “locked-down” style, similar to Android and iOS."" PinePhone owners are generally tinkerers who like control over their device, which is made much harder with Ubuntu Touch."
Actually apt is allowed in the PinePhone, so the article linked is mistaken. Which is typical for that site since it is not technical. The "locked-down style" is particularly wrong and shows the author hasn't done any research at all.
In general, new people coming into UT should expect having to adapt to things being different than their Linux distro. I like to describe the Ubuntu Touch experience as the closest you can get to the familiar GNU/Linux stack while retaining the phone's original functionality.