According to LinkedIn, there are nearly 800 million professionals on the platform as of the start of 2022. That is a lot of people!
A lot of them are senior-level influencers. These people could conceivably be project owners or drivers in their respective companies. So you will not be wasting time with quite so many people who might not have too much clout at their businesses.
And, more importantly, many of them drive business decisions. As a result, advertising on LinkedIn is likely going to be better-targeted than ads on either Twitter or Facebook. Note: it does not replace ads on either of those two other platforms.