I managed many marketing campaigns on Linkedin over the years and spent thousands each month on the platform as a corporate user. If you think that paying for the service you'd be excluded from their shitty ads and get more granular opt-out features than under a free-subscription model - but nope.
they have literally done nothing to deserve any trust from their users. People still use it because they tell themselves "I might need it one day when I look for a job". That's also wrong - if you're doing it right you build good social connections in the real world because most (if not the only things) you get from LinkedIn is scams.
The only upside where I find LinkedIn useful is for OSINT purposes. It's very easy to find all types of people there and get a rough picture how companies are run (what their employees are working on and what security problems that might imply) and build what the recruiting industry calls talent-maps (competiter analysis) which can be useful in infosec for threat & counter-intel. But it has 0 value for any legitimate purposes (that they advertise the service for).