A lot of trial and error is needed
Ver mensaje de WaltZalenskiWalt, the wine you comment is Baltasar Gracián Garnacha Viñas Viejas 2001?: https://www.verema.com/comunidad/vinoscatados/vino.asp?vino=6484
I agree with you regarding used oak barrels for wines with less structure. I think most of the new wineries (specially in new regions) need years of experimentation to determine which is the best ageing in oak for their wines. They have to choose type of oak, barrel winemaker, level of barrel toasting, time to stay in barrel according to the vintage, etc.
Too many variables and too few vintages every year :-) In a sense, the recent wave of new wines/wineries are mostly experimentation paid by poor ’aficionados’ like us.