I disagree.

When I was at school the teaching of grammar, punctuation and the details of how to construct sentences and paragraphs (which included diagramming sentences) was a constant throughout primary grades.

The addition of those apostrophes would have been unacceptable purely on aesthetic grounds; the teachers would have accepted them only for possessive use.

English is still in flux and I'm willing to change with it (although I dislike txt spk) but I find the examples given above unpleasant on the page. "Fish and Chip's" is also well out of order; with respect to young Master BicesterTerrier I'd say "that Silver card is James's".