Buying mining hardware you buy an item that belongs to you. Even with Ryn if something happens you will have for example a video card or other hardware. Trading on the stock exchange you get only digital assets, the rate of which is not predictable. I choose mining.
even though you will get a graphic card (VGA) or other hardware I think it will be difficult to sell it back. On the other hand, now mining is not profitable considering the price of cryptocurrency is bleeding even some large mining companies have gone bankrupt, so are you still sure to choose mining?