Despite the fact that the information that 27% of total supply is in the hands of one investor is very disturbing, I believe that Dogecoin still has a great potential. I will probably not keep even 10% of my funds in it, but I think I will seriously consider to spend about 5% and lock it in DOGE for long term.
How can you be fine with it and think it will go up? I mean not as in that it can't go up, but why would you think that it is a good investment when one person owns so much? I think it is crazy to invest into something if there is one person that could buy it all and make it all go away, I personally do not prefer to invest into things that could be done like that, I rather invest into things that would make me money by being decentralized and one person having 27% of total supply is not a decentralized coin.
Hence even if it can go up, it is not a good investment for me, it could crash at any moment and worth nothing at all and I can't invest into something that has a problem like that. Even bitcoin has a risk but not that much, nobody owns that much of bitcoin. I rather invest into something that has the biggest whale at few percent at most.