The transformations in Frontier (and in 7 and plus to lesser extents, haven't seen SDF/DYRL/etc for ages) are used to
kill the pilots drastically alter the trajectory and speed of the craft, they also improve cannon/missile FoVs and shifts between forms by the better pilots tend to be done on a few second basis to avoid/shoot down missiles, to emergency stop, to get the upper hand on an opponent in a dogfight rather than trying to simply out manoeuvre him "the old fashioned way".
The suit the character is wearing is actually a military design originally, it's a stunt-flight pilot suit adapted for those purposes which is why it 'works' with the VF-25, would surprise that it actually worked cuz you'd expect it to be encoded but hey, suspension of disbelief.
And on top of that really the first flight is more frantic/hectic and although it ends well is hardly anything other than an amateur screaming at the controls with some natural talent getting lucky.
Whilst I realise 'it's not gonna be easy' you have to realise there's a large time gap between that epic first time out in a veritech and Alto's flight - veritech aren't new, they're the staple of the defence force and that means everyone who wants to know about them /knows a lot/ about them.
It's in their films and stuff, so he's going to be vaguely familiar with how it works before even seeing it for real, let alone getting into it, his first couple comments elude to that.
The somewhat out-of-universe unrealistic thing about that first flight for Alto was it was in one of the ace's craft which meant it had one of the special packs on it which he would have had no idea how to handle more than likely.
If it's any consolation I didn't much enjoy Minmei in SDF/DYRL, It was Plus, Zero and 7 that allowed me to enjoy Frontier for what it is, music is embedded in that shows reality, and the song 'power' thing seems to be related to fold waves.
.......Which makes sense considering it relates us to the Proto-culture AND the Zentradi AND the Vajra AND the Proto-Devilin (or whatever they were called, I tried not to pay TOO much attention to 7 and just sort of ran with it it's definitely the worst of the macross franchise), meaning all life is to some small degree fold-wave sensitive (though it's obviously not the original intent in SDF, in the slightest).
Song is just an ultra-cool (well, imo) way of doing it.
WH40K has Psykers, Star Trek has lots of random ways of tying you to the universe(including a Galactic Progenitor race?)/opponents you'll meet, even Freespace has hints at a commonality between all of the mentioned species and organisation so far

Frontier doesn't really 'show' any enemy kills by non-heros but you know that it happens because of the scale of the battles, most of the flashy stuff is on screen by the NUNS/SMS though.
Macross Frontier really topped the franchise even if most of it is fanwank, if you watched the rest of the franchise and can enjoy it for it's own sake rather than what you want it to be then Frontier is an amazing offering, and the fans did eat it up.
Nevermind the fact that Mei Nakabayashi is one of the best female singers I've ever listened to which just adds to it moreso than Plus or 7 did.