I hope that OP isn't seriously suggesting that “discrimination” was a factor, it’s too serious an accusation to be thrown around so carelessly. There are enough past incidents of “unusual” names being erroneously flagged to suggest it's no about irrational human discrimination but about imperfect mostly automated processes. The policy is about using “real names”, the automated system was obviously tripped and the app…
... but they can still discriminate. In some jurisdictions, such as the UK, intention or malice is not required. If Google has a policy or system that disadvantages a group of people who share a protected characteristic, it is discriminating. This is defined in law.
http://www.equality-law.co.uk/news/106/66/Types-of-discrimin...