Is it safe to use glass cooktop cleaner to clean and polish stainless steel pots?
It depends on the abrasive.

In the USA, there is a class of "soft abrasives" designed for effective scrubbing while not scratching cookware and barware.  This includes the brands Bon Ami and Barkeeper's Friend.  These, and abrasives like them, can be used on most cookware, and certainly on any kind of steel.

Harsher abrasives, such as Comet Bleach Powder and Ajax, are designed for cleaning porcelain and will scratch most cookware and even some kinds of glass.  You can use them on anodized aluminum coated cookware, because the coating is basically corundum (and this a hardness of 8).  However, even for these, harsh abrasives will wear down the coating over the years, eventually stripping it off (based on my personal experience).

The cleaner you linked to is probably fine for steel, since it contains no harsh base chemicals; the strongest surfactant is limonene.  The only thing that would make it not-safe would be a silica-based or corundum-based scrubbing agent.

Please also see discussion in the comments regarding calcium carbonate as a scrubbing agent, and why Comet and Ajax are harsh (because of strong basic chemicals).