Not so sure about all the drive easy stuff.
The bike has a O2 sensor. It will not run lean or rich enough to do harm in any situation that is a bolt on part IE exhaust or intake. The 12 minute tune is more than enough. It's not idea and will result in less mpg and not as much power hence why we tune.
You should get a tune asap but riding with no exhaust at all or a fully restrictive oem setup will run with out danger to the engine. As long as that's all you did to it!
For the cost of a dyno for 30 minutes you could buy the cable and a new phone lol. Last I checked for a 1 hour dyno tune was about $450.
Doing a diy tune is supper easy.