Technology

True, but this isn't prose or high literature. What reason do you suggest why "his or her" would be preferable to "their" in this context?

The prescriptivist "It's grammatically incorrect" argument doesn't hold much water when it has been used since middle English.

In a poem, I can see the thought:
"I tried to fit the cadence of this clause
Within the measure of this poem's form
Which has in past and present be the norm
By which this poem, too, seeks to adhere.
This is my authorial choice's cause
for my decision not to use a "their"." But if to find an alternate way to word
Your writing's pronouns strikes you as absurd
I nonetheless opine that you still ought
To make the token effort to include
With "their" all people by the same respect
That you for yourself would from them expect.
Refusing this, I feel, would be quite rude.