Pirates do have reason for fear and protest. And yes access via links is still giving access.
Basis for protest -- traditional separation of civil (property, contractual, and mental considerations) from criminal matters (actual or potential physical harm, force and loss of liberty against persons or harm to the community).
Even most laws on robbery is punished primarily on the basis of harm to community (banks) or on actual or potential physical harm to persons during commission or escape from the felony.
P.S. Actually for remixes etc, I think that law allows 30 second clips without violating copyright. I am sure that is limited to 1 clip from each performance per each of your means of distribution (webpage, CD, etc). But consult a lawyer or at least google copyright law from professional and college sources.
#1 Law established when sheet music was copyrighted already protects innocent perform for purposes that do not attempt material gain (cash/property) nor attempts to deprive the copyright owner of opportunity to profit. Yes cash prize talent shows technically require permission (e.g. Miss America).
#2 Rights to post video either already exist within or can be added to Gaming licenses issued with purchased games. Can also be added to form letters included with free games sent to reviewers. Zero effort by game companies.
Sorry but this campaign of twisted half-truths relies on your legal ignorance. Google Public Performance and Copyright.