Make it harder for your users to contact you

Is there an argument to be made to make it harder for users to contact you?

I’ve apparently been running a small unintentional expirement for the past several months. My contact email was removed from the footer of one of my websites. This change meant that the only way to get the email was on the support page. I obviously did not notice the change but did notice that the # of emails I received dropped by about 25-50%. However the quality of emails I received were much better. Meaningful questions, suggestions whereas before it was people asking for the most obvious solution to a problem that can be handled in 30 seconds by reading. No obvious noticeable change in MRR.