In this question, in one of the comment threads the following was stated
Tom is taller than me" or "Tom is taller than I am" — both are correct. "Tom is taller than I" is WRONG` (link)
Which I'd agree with. This comment is disputed with
That is very arguable. More used? Definitely. Wrong? Not if you consider "than" as being a conjunction, in which case the last part of the phrase "Tom is taller than I [am tall]" is elided.
So is it really grammatically acceptable to use the following?
Tom is taller than I