Amp debate tube vs ab etc

Me and brother in law had talked about installing in his Tacoma the original JBL premium speakers which are 45-50watts each. Suggested 200watt amp too low would be at capacity maybe leave room by getting larger amp like 3-400wattX4 instead he wants do 200wattX4. I offered my used Kenwood kac with 900watts maybe a bit much but then he went off like this is he talking straight, feels like college class if you ever seen his other texts but I'm open minded.

Me: 200 Watts that's crazy low for 4 speakers fyi don't run minimum RMS or your sound won't be as good it could be. Speakers I put in my dad's Cobalt recently are an RMS of 60 watts but they can handle up to 180 watts and running about 80 watts to each but truck not huge space so maybe don't
Need to much power idk.

his response lol nerdy but maybe good.
Yeah, none of that is true.
Because there's no standardized way to measure amplifier output power except watts, people put too much emphasis on that number. Thing is, a Watt (W) is just the product of multiplying the measured current (amps) by the measured voltage (V).
Amps = Number of Electrons
Volts = How badly the electrons want to move

You can make 35,000 volts just rubbing your feet on carpet.

While volts are easy to come by, amps are not.

Real world result is that an expensive 25 watt tube amp is much louder than a cheap 2000 watt mosfet amp.

See I tried be simple and I don't even think mosfet uses or tubes or by his application. Yeah I always talk to him in terms of RMS but he stating zero way to measure watts. But everything based on wattage and yes you need to adjust voltage/amperage but if his speakers need 45-50 watts each I also understand him wanting a 200x4 amp would have zero room and be maxed out. Lol just never talk audio like it's college day so trying to understand history point of view really because he is often wrong and but idk this time.
I don't know where you're being serious or not. For the statement "Real world result is that an expensive 25 watt tube amp is much louder than a cheap 2000 watt mosfet amp.", nothing could be farther from the truth.

Speaker ratings are typically worse than amplifier ratings. Just because the speakers say that they can 'handle' x-watts doesn't mean that they will do so with the same level of distortion as they will at their RMS rating.

One other thing, there is no such thing as RMS watts, technically. It's used and excepted, generally. The reason I use it when measuring power is because I'm calculating power using RMS voltage, not peak voltage.
I looked over what I wrote and it is a bit confusing yes. I think your response gives some good clarity I do understand and agree with your statement. I think more than anything what I understood is say the speakers are rated 45 to 50 watts you wouldn't get a quality amp like he's talking about such as jl audio. Let's say his speakers are listed as a minimum 45 watt RMS and he gets a jail audio amp that's 200 W * 4 that seems to have no room for the potential of peak power requirements above the minimum and could cause an issue of clipping distortion or shorting out we're burning up your equipment
While volts are easy to come by, amps are not.

If volts were easy to come by there wouldn't be an entire section of an amplifier dedicated to increasing the supply of them. We're not all flying kites with keys dangling off the strings behind our cars. We have a fixed supply of them available.

I don't see a tube vs A/B debate here. Did autocorrect get the best of you? Or was this one of them 6 beer debates?