The outcome of this question will be resolved according to data from the "Threads Historical User Counts" table on Quiver Quantitative :
https://www.quiverquant.com/threadstracker/

If the last historical update from July 31st is less than 125M and the first update from August 1st is more than 125M the question will resolve as NO even if it is reported elsewhere that Threads crossed the 200M threshold before August 1st.

If Quiver Quantitative reports 125M in historical data corresponding to a datetime prior to August 1st, the question will resolve as YES even if it is reported elsewhere that Threads did not hit this threshold (e.g. if it was rounded up on the reporting website).