I just read the article. Fine ideas if you want to clean a pond.
It does not really explain why it is necessary, except by implication,
that you want to get all of the old muck and debris out annually.

If the pond is well designed, you can probably get most of the muck
and debris out with a wet vac and a net. 80-90% would surely be
fine. The cycle they recommend would mean recycling the pond with the
new water. OK, but a pain.

How is your pond laid out? Does it have good filtration? Has it a
deep spot where the muck and debris gathers? Do you care if there is
algae on the sides (It is good for the pond)?

Others may have some great ideas for you.

Jim