This reminds me of a time where I was in SF taking pics of "the pigeon whisperer" lady (A lady who would feed the pigeons, and thus had a ton of them around her): She was in an alley near Financial District, and I was taking pics of her and all the pigeons.
Some thug came out of some building telling me I was not allowed to take any pictures.
I told him to get lost. and he said "Policy is that you cannot take pictures"
I said "I am standing on public property. If I can see it with my eyes from where I am standing in public, then I can take pics of it. Get lost."
Same goes for scraping a site: If I can see it in open public from any browser anywhere on the globe: that is open data. I dont give a shit what lawyers or companies think in this regard.
The term "walled garden" exists - if you want your shit hidden... then dont make it available to the open web.
There was a recent piece of caselaw relating to scraping, in USA, IIRC. I seem to remember it was allowed for user accessible areas.
I'm not sure LinkedIn have a legal basis for their complaint, but of course that won't stop them.
This is not legal advice and does not relate to my employment.