Another option that has been in place for the Jolla phone for a while now has been OpenRepos. This is a user created and driven set of repositories that contain 3rd party applications for various platforms, including Sailfish. There are currently no applications ported to the tablet hardware on there, but once the tablet starts shipping, it won't be beyond the bounds of credibilty to expect some tablet versions to appear there.
For the really adventurous, many of these applications are open source so users could, conceivably compile them on their tablets, themselves.
All that said, it still doesn't fully/really address the current lack of native apps.
No. But he could plug Sailfish OS into a search engine and have 30 minutes looking round the current ecosystem. That's how long it would have taken.
This isn't a simple user, it's a review.