Yes and no, it does kill people so fast that it would run into spreading roadblocks here and there but its main issue is that it is not airborne. Should it be, the rate it kills people would be unlikely to matter unless we took very serious precautions that some countries have proven to be unwilling to do. It also has a decently long incubation period that could shed disease while not obviously infected.

If Ebola Zaire were airborne (while being as infectious as it is through other methods which is admittedly a stretch but not a huge one) and it got into a major American city and we did not quarantine in time it'd be fucking over. Like we would be unbelievably fucked. The casualties world wide would be astronomical. Covid would be a joke in comparison.

Ebola has the potential to be a big fucking deal but thankfully it is not.

I am actually more scared of Ebola Sudan for the kill rate reason. If it became airborne I think things could be worse. However, Ebola Reston is more closely related to Ebola Zaire so we don't need to worry about that just yet.