they might not have had grounds to terminate him for being a bigot
Why not?
Is there any other kind
one of his previous tweets said "saying everyone just wanted to be firefighters, not EMTs"
Pretty sure that is true for the FDNY

, and the reason is clear:
"EMT Salary Information:
Number of Years Salary
Starting Salary $33,320
After 1 Year $35,102
After 2 Years $35,728
After 3 Years $41,369
After 5 Years $47,685
Paramedic Salary Information
Number of Years Salary
Starting Salary $45,454
After 1 Year $50,070
After 2 Years $52,113
After 3 Years $57,486
After 5 Years $61,464"
vs.
Firefighter Salary Guide
Number of Years Base Fringe Total
Starting Salary $43,904 $1,292 $45,196
After 1 Year $46,066 $9,035 $55,101
After 2 Year $50,173 $9,468 $59,641
After 3 Year $55,192 $10,075 $65,267
After 4 Year $60,837 $10,667 $71,504
After 5 Year $85,292 $25,631 $110,293
"
Starting salary for a Firefighter starts at about $39,370. But with overtime and holiday pay, which is often required, you can get about $3,704 in additional compensation. After five years, a firefighter can make close to $100,000, including overtime and holiday pay."
So a top step medic makes over $20k less than a comparable FF (base pay).