On profiles under 20k followers, comments are the king
Comments are the king when you are small, like under 10k-20k
Linked In likes comments much more and when you comment more -> you are engaging with others and spend more time on the platform -> algorithm remembers that and pushes your posts more.
Of all of features Linked in likes comments the most.
But not any comment, Ai slop comments destroy reputation.
Good comments are gold.
If you comment often to someone's profile you get free visibility out of his audience.
Then you get views to your profile, cause people click and want to connect with someone smart and like-minded.
Then they see your page - what you do, what you offer, your prospect, if its interesting they will connect or reach out with DM so you can help them with something and sell your services.
Its pretty simple actually, the whole process.