To start with, I am so sorry that you have received an automatic invitation to subscribe my LinkedIn newsletter, 'Chalkboard Thoughts'. It's incredible that LinkedIn who has so many rules around inviting people to connect, can allow for everyone to be spammed with newsletter invitations. I stopped writing articles on LinkedIn some time ago, because basically the articles went into a black hole and received zero engagement.
The same happens with all new developments on LinkedIn, initially there's a surge and people are excited and engaged and after that it slows, reduces and eventually completely stops as the algorithm will eventually ignore it.
I guess they (LinkedIn) must have realised this over time and then opted for the newsletter approach, which exists now and has been rolled out to most of us. The only downside is that when you write the first article for your newsletter, your whole network gets invited to subscribe. For me it's like spamming your whole network and there's a risk that people will disconnect as a result of course. I hope you don't but then again you are free to choose whatever action you wish, as it happens I'm not as interested anymore in growing my network, anywhere.
But...