No a TV can never be too heavy to mount. But the wall you mount it on may not be strong enough to hold it.
How do you mount a 75 inch TV?
https://www.youtube.com/watch?v=9XH373KRgHA
Can you mount a 75 inch TV on a wall?
Is it safe to mount your 65 inch, 75 inch or larger TV on the wall? The answer to this is yes, you can mount your XL TV on the wall. Safety is paramount, of course. That's why it is always important to check whether the TV mount used is TÜV certified.
Is it bad to mount a TV on drywall?
Even though a drywall can support a TV up to 100 lbs, the device is still brittle and the mount can require additional support, or else the TV will land on the floor. Wall studs make up the frame for the TV that supports your walls. They provide a sturdy anchor point, ensuring that both the mount and TV stay in place.12 oct 2020
Will drywall anchors hold a TV?
TV mounts: It is possible to mount a bracket holding a 30-pound TV on drywall without drilling the bracket into a stud. Toggle bolts are the types of drywall anchors that can support up to 50 pounds, while steel hollow-wall anchors have a drywall anchors weight limit of up to 100 pounds.