Print profiles are not there to help newbies, they are there to print the model as the designer intended.
Including strength, quality, support, colours, material choices and more.
You may be well versed in 3D printing, but, are you well versed in obtaining the results needed for some quality models that have complexity?
Those profiles often include colouring information, you will not get that without the profiles.
If the model requires supports, the designer will have to have printed the model successfully using the profile, so, you should be confident the model can be printed using the profiles.
You do not lose anything or your own settings by downloading the model with the profile. You do you lose things, lot of things by ignoring it.
Download the profile tweak it if you wish, and explore the choices made by the designer.
Grabbing a couple of STLs and then recreating all the settings, painting or colouring the model, and choosing the direction of print, the wall count, and the infill so that this particular model is strong enough and the infill doesn’t affect surface quality seems like a lot of guesswork.
But, if you want to buy just the lumber and work out if you need nails or screws, how many you need, and the finish of the wood, go for it, nothing is stopping you.