I am the only person in academia doing a certain research, so several colleagues ask me to collaborate. Of course, I am more than happy to take part in multidisciplinary work, as it tends to be more publishable (medicine/medicinal chemistry).
But there's one big drawback! My colleagues always insist on publishing in MDPI. This is due to the publisher's low acceptance criteria and quick processing of what they consider essential for evaluation purposes. So my voice is always overruled, and almost all of my collaborative papers are published either there or in something adequate like Frontiers...
Recently, I even managed to convince them to try ACS, but after the rejection in the first picked journal, they decided to switch straight to MDPI.
When I publish alone or in smaller teams of 2-3 people, with me as the only corresponding author, I never, ever send to these predatory journals. Nevertheless, almost half of my list of papers is published in MDPI!