Section 3101 (5) states, "By a majority vote of the owners present and voting in person or by written proxy or absentee ballot, the owners may determine...". Owners are given three choices of methods to vote.
Your by-laws, I assume passed by a majority at a duly called meeting, exclude voting by absentee ballot and have added a new method of voting by media link attendance. I am not an attorney, but I believe that if an owner (or owners) requested an absentee ballot for voting they would be within their rights to do so and your association would need to allow them this method based on the Statues. I also believe the courts should allow attendance via media link as a form of in-person voting but cannot say for sure. I recommend you run the above by your legal advisor before acting.
Good question for the attorneys at the MARA Road Conference , October 1, 2022, at Maple Hill Farm.