I did the following:
1: Set the Style to _WHIMSY.
2: File > Open > Special > Open MIDI file and loaded the O/P's MIDI file.
3: Dragged the Piano Radio Button to the MIDI item on the drop zone, & wait for it to change to green.
4: File > New.
5: File > Open > Special > Open MIDI File and select the newly created MIDI file from the \bb\DragDrop\ folder.
6: Set the Style to _WHIMSY again, (it had defaulted to ZZJAZWAL and was disabled).

I didn't use a DAW at all, I only used BIAB, but I think the results are the same.

There is a significant change in the file size:
- The O/P's original MIDI file is 126kb, and the new MIDI file is ~15kb.
- The original file contains thousands of Sustain Pedal events. I have no idea how thousands of sequential Sustain Pedal events got to be included in the file.

BIAB & RB2025 Win.(Audiophile), Sonar Platinum, Cakewalk by Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Kontakt, Focusrite 18i20, KetronSD2, NS40M Monitors, Pioneer Active Monitors, AKG K271 Studio H'phones