No, it was the Romanian National Liberal Party that used TikTok for campaigning in the first place:

https://www.politico.eu/article/investigation-ties-romanian-...

The campaign was co-opted by trolls (could have been bored teenagers) to use the hash tag for their purposes.

The win of Georgescu seems organic, he is projected to have the same results in May:

https://www.politico.eu/article/romania-election-2025-hungar...

In the context of the EU it is in no way surprising that a "far-right" candidate gets 30% of the votes. Austria, France and the Netherlands were pioneers in 2000 already.

Germany's AfD had 12% after Merkel's immigration disaster and now was 21% (in polls) after the US has repeatedly used and insulted the EU in the past 4 years. In 2019 pro-US sentiment was deservedly at an all-time high in Germany, that is no longer the case.