cozcharlie
Contributor
As I understand it when Covid hit the MXN / USD exchange rate went from around 18.5:1 to 25:1, about a loss of 1/3 of its relative value. At the time from everything I read it was primarily due to Mexican citizens fleeing to dollars as a reserve currency. Since then it has been recovering some of its value, or the dollar is losing value in general.
While I am sure the MXN peso was worse for the reason you described, there was also a general flight to quality/safety into the US dollar away from the smaller currencies in March/April timeframe (not just the peso ). British Pound, Aussie dollar , and Canadian dollar were all weak relative to US dollar.
Obviously given our horrendous budget deficits it is reasonable to question how “safe” the US dollar is going forward , but for decades when there is panic in global markets the US dollar has strengthened (and the peso has weakened).