Hmmm...I listen to people who understand and have accomplished things.
If someone were an actual trainer and happened to offer online training as a part of a business, I would listen.
If someone had years of experience and a proved track record, I would listen.
If someone I knew had been trained by the person in person and suggested him/her, I would listen.
These instances, however, are rare.
Complication makes it easy to explain failure.