Was the 1927 Bath Bomber on an SRDI?
Did the 1927 Bath Bomber play too many video games?
Was the 1927 Bath Bomber a member of BLM?
Seriously, a sample of one is not a sample.
Look for better arguments, they are extant.
Kehoe, an electrician, had previously worked on the school and had rigged explosives through the buildings in the weeks leading up to the attack. His timer device in one part of the building failed, so children in those rooms survived.
In the immediate aftermath of the school explosion, Kehoe set off another bomb in his car, killing himself and several others nearby. Prior to the school explosion, he had murdered his wife and set his own farm on fire.
His motive was anger at a foreclosure on his farm, and the taxes levied by the township to pay for the new school.
The 1927 bomber was a local guy who was ticked-off over his property taxes.