Do snake plants have aerial roots?
Those bulkier structures are called rhizomes, and they’re a normal feature of Snake Plants. Like many succulents, your Sansevieria doesn’t have above-ground stems. Instead, its rhizomes wind through the ground until they find a promising place to send up some foliage.
Do snake plants like tight roots?
Now, as a general rule of thumb, Snake Plants prefer to be root bound, so if you don’t need to do this I don’t recommend that you repot your plant into a larger pot. This can unnecessarily stress your plant out.