Food companies have to test their product to make sure it's shelf stable. The companies have no reason to test their product out past several months to a year. They have to put a date on food that they have actually tested, so even water gets a best by date.

Is Ecru winning enough? I might have to go with Celestial or Cotton.... Hmmm

It also looks like the mdf is plastic wrapped, so glue might not hold much at all unless you cut the plastic wood look wrapping off. I think you might be ahead by finding a friend with some wood tools and making the side pieces out of maple or ash. I'd also shit all over the company because that need is made to fail.

I'd bolt and glue the board back on but bolt it through the side board and use washers to spread the pressure out on the outside.

Then but another frame soon. Mdf frame sounds like trash regardless