Yes. Too much brushing or shearing thins the fabric; prolonged bio-polishing lowers tear strength; high-temperature heat-setting weakens elastane; sanding and carbon brushing reduce abrasion resistance; resins make the fabric stiff and brittle. The effect is more visible on fine yarns and low GSM. To avoid the problem, ask for bursting and abrasion tests on the finished fabric and compare with the greige. A correct finish improves appearance without compromising durability.
Can finishing weaken the knit (over-finishing)?

over-finishingstrengthquality
Fibres & yarnsHow much elastane (Lycra) goes into a knit and what does each percentage change?
The most common levels are 2 to 5 percent elastane for comfort single jersey and rib, around 5 to 10 percent for very stretchy articles such as leggings or…
Fibres & yarnsDoes elastane lose its elasticity over time?
Yes, elastane can age: after many years, or after repeated exposure to high heat, chlorine and some light, the elastic thread weakens, the fabric becomes saggy and…
Fibres & yarnsWhat is modal and how does it differ from cotton?
Modal is a regenerated cellulose fibre made from beech wood pulp, with a very soft hand, fine lustre and fluid drape.