The short story:
I wonder if wiping the clutch plates with paper towels before reinstalling them removed too much oil and that is the reason the motor won’t start.
Nope, since you can just hold in the clutch to start the bike even if the rest of the plates were pretty stuck together.
Did you check your clutch cable adjustment?
1986 Kawasaki Vulcan 750
NGK Iridium Plugs #7803/DPR7EIX-9
Duralast Gold ETX15 AGM Battery
Coastered & Shaved
Metzeler ME880 [110/90-19, 170/80-15]
Balance Dampers Replaced
Rebuilt Forks w/ Progressive Springs
VN750.com Grill Cover
Emgo 23-92411 Handlebars
MOSFET FH012AA R/R
1990 Kawasaki Vulcan 750
1998 Honda VFR800 FI
2014 Honda VFR800F
1989 Pontiac Firebird Formula 350