My 2008 ZZR600 sat for over 2 years, and when I turned the key nothing happened, even with a new battery added.
I put it in first gear and pushed the bike forwards and backwards with the clutch lever out, until the back tire was skidding on the floor. It worked- the starter began turning the engine.
Then I had to deal with old improperly stabilized fuel in the gas tank after the engine started, after several seconds of cranking.
At least you learned quickly and cheaply which mechanic to not trust.
“Do…not waste time protesting the self-inflated showmen and bloviating bullshitters who populate our culture. It’s more fun to marvel at them, to appreciate them, to be grateful for them, and to mock them relentlessly. ”-from the 2010 book American Freak Show by Willie Geist. "He wondered what difference any of it would make two hundred years from now." -from the book Cyclops by Clive Cussler.