I can't call the above exactly disadvantages. The fact is that it is not so often necessary to be distracted during cleaning, therefore vertical parking can be easily dispensed with (After all, if necessary, you can put down the vacuum cleaner, move chairs / small furniture and continue cleaning). As for holding the button to operate the vacuum cleaner, it does not tire, it is conveniently located, no effort is required. And many more expensive vacuum cleaner brands have exactly the same device. Regarding the battery, I read that somehow, nevertheless, it is possible to unscrew it, but so far I can’t say anything. In general, I am satisfied with my purchase.
Provided some images to give a better idea of the product's size and scale.