A minimalist tree still needs suitable support, usable resting space and a practical route between levels. Removing visual clutter should not mean removing the features that allow the cat to use the furniture comfortably.
Check grip on access surfaces, sufficient room to turn and scratching areas that are accessible rather than purely decorative. Some minimalist designs offer fewer functions, which can be perfectly workable if the cat has separate scratching, hiding and resting options elsewhere. Read the product description carefully so you understand what is included. A clean outline does not establish that joints are stronger, maintenance is simpler or the tree is appropriate for every large cat. Choose it as part of the home environment as a whole, with clear measurements and installation information supporting the style you prefer.
List what the design intentionally leaves out. If it has no enclosed bed, that is not necessarily a fault, but the home still needs a suitable hiding option elsewhere if the cat uses one.
For product comparisons alongside this advice, see Linden wooden cat tower and Arbor Retreat. The details below explain their sizes and uses.
Further reading: cats.org.uk.
Linden wooden cat tower
Arbor Retreat
Floral Canopy