I agree with him too. @just_randy, maybe can change from
# connector terminalIDs
pars.add_argument('--terminal_id',
type=inkex.Boolean,
default = 'false',
help = 'some help')
to
# connector terminalIDs
pars.add_argument('--terminal_id',
type=inkex.Boolean,
default = 'true',
help = 'some help')
(this is lines 118 to 122, python file) to by default tick the checkbox upon first time installation