One of those who: VP Sg or VP Pl?

[Wilson Gray]

>From  ARS Technica:

"I'm one of those lazy hippies who _likes_ to do _her power-computing in bed
..."

For me, the above is absolutely grammatical. However, I've both heard and
read
that this string is ungrammatical and that the grammatical form is:

"I'm one of those lazy hippies who _like_ to do _their_ power-computing in
bed ..."

Does anyone else care enough to write an opinion?

-Wilson Gray

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