National memorial for quake, tsunami victims to be built in Fukushima

What's the point of a memorial when many of the living still don't have homes?

Yeah, @Bertie said it. What's the point? You still have a kind of living memorial all around you. If you need a reminder of the disaster, just ask the people still living it.

also, I know this is to get tourist visits, but how can you build a memorial to honor the dead when we don't know how many are still dying from the radioactive fallout of that plant?

Agreed, why waste money upon Memorials when you have real issues to deal with. Also.. whilst we're at it, what happened to all the donations ?

 how many are still dying from the radioactive fallout of that plant?

Nobody

Well, it doesnt exactly say dying.... but cases of Throid Cancer can be connected to the event:

https://www.japantimes.co.jp/news/2017/06/06/national/seven-fukushima-residents-diagnosed-thyroid-cancer/#.WauWDMgjGHs