Oh please.
Yes you shouldn't feed beer to animals.
Yes this tourist should be charged with interfering with wildlife or whatever relevant local law exists.
Yes changes should be made to avoid this type of interaction in future.
However, "forced" is clearly the wrong verb here, and I don't think a few hundred ml is going to harm a several thousand kilo animal.
Thai politics are very strange from a Western perspective.
I know enough about it to know that I just don't get it at all and trying to understand through the prism of Western politics is just confusing.
However, without knowing anything about this specific situation my strong suspicion is that this phone call was a convenient excuse to remove her.