You need to read up on the 3 kinds of EMP. Here’s a short explanation: https://en.wikipedia.org/wiki/Nuclear_electromagnetic_pulse
What those worried about EMP are concerned about is the E1 pulse, which takes place in literally nanoseconds, far faster than surge protectors can react. You are making the mistake of believing that the E2 pulse, which is most similar to lightening - and can be protected against in pretty much the same way, is all that there is to EMP. It definitely is NOT. Read the article.
My response was to a CME EMP, not a nuclear EMP. Please don’t conflate these two types of EMP as the poster I replied to has.
https://en.wikipedia.org/wiki/Electromagnetic_pulse
“An electromagnetic pulse (EMP), also sometimes called a transient electromagnetic disturbance, is a short burst of electromagnetic energy. Such a pulse’s origination may be a natural occurrence or man-made and can occur as a radiated, electric, or magnetic field or a conducted electric current, depending on the source.”
You have misunderstood Justa's comment. You are talking about high frequency pulses which everyone agrees are not going to be stopped by surge protectors. Justa was talking about the low frequency EMP and CME events that are much more likely. First, because low frequency EMP is much easier than high frequency. Second, because low frequencies are the only plausible natural event. Justa is exactly correct that surge protectors are more than adequate for those most likely events.