Should we care if pitchers use pine tar?

Last night the Yankees got demolished by the Mariners, 10-1, but the only thing fans were talking about after the game was Yusei Kikuchi’s apparent use of pin
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Almost everyone is using something': Getting a grip on how MLB pitchers are cheating - The Athletic

Should we care if pitchers use pine tar?, Bronx Pinstripes

Yusei Kikuchi apparently used pine tar on brim of hat - NBC Sports

Should Pine Tar Be Legal for Pitchers?, News, Scores, Highlights, Stats, and Rumors

GRIT ALL-NATURAL PINE TAR AND ROSIN BLEND – Warstic

Should we care if pitchers use pine tar?, Bronx Pinstripes

Should Pine Tar Be Legal for Pitchers To Use? - Sports Talk Florida - N

Pine Tar for Baseball: Why Players are Using It?

Padres' Matt Strahm says MLB cracking down on 'cheating' overdue - The San Diego Union-Tribune

MLB warns teams that pitchers caught doctoring balls will get 10-game bans beginning June 21

Sticky stuff' crackdown in MLB is worst possible development for game

MLB pitchers cheat, too. They use pine tar instead of trash cans., Sports

A field guide to pitchers using pine tar

Pine Tar in Baseball: What It Does, Using It & Rules