Nah, this is as 1.0 as you can get, assuming you're not asking for completely unstyled text. Forum scripts with this sort of simplicity were around for decades, with UBB being created in 1996 (and having significantly more features than this software), and basic scripts like WWWBoard dating back to 1995 or earlier.
It was AJAX and processing data via JavaScript that was a web 2.0 thing (for the most part), not just submitting forms in general.
2.0 is not about a switchover date, it's functionality, or even philosophy. Mid-90s forums would be understood as visionary betas of Web 2.0 under this terminology. I concede that Orange Forum is definitely very early 2.0, possibly even very late 1.0, but it it most definitely not "as 1.0 as you can get". That would be static websites with at most a guest book and/or email form.
Nope. Flickr was the quintessential Web 2.0 app, and it wasn't very JavaScript heavy at the start. Web 2.0 was fundamentally about user-generated content.
It was AJAX and processing data via JavaScript that was a web 2.0 thing (for the most part), not just submitting forms in general.