In my humble opinion the best option for senior self defense is staying mobile and agile. Being aware of your surroundings and running before something bad happens to you will result in the best outcome. If you are physically compromised then carry a firearm and know how to use it.
I have had some martial arts and self defense training experience. Sad to say I have also experienced threats to my safety more than once. Self defense training is good to have, just know it never happens like they show you in a self defense video or how Hollywood portrays it. Violent threats are chaotic, unpredictable and don't usually go the way you expect. Unless you have the skills of Bruce Lee, no amount of training is guaranteed to save your bacon. That being said some training is better than nothing. But the focus should be more on situational awareness and exit strategy.
I don't know why it's glorified, violence is ugly and traumatic.