Australia Australia - Chidlow, WA, Mundaring Marksman Range, Male, 30-50, “Yakka” jeans, Aug'78

[Melt71]

was this the reason for a DNA profile to be looked into, so it could be compared to relatives of the missing man?

Seems like the family may have done a one-to-one comparison against the 1979 Mundaring remains.
However with the current AFP program involving @othram this case should eventually work it's way through and the remains finally be identified.

National DNA Program partners with Othram to use forensic genetic genealogy for unsolved Australian cases | Australian Federal Police

26 October 2022 The AFP will have access to specialised forensic DNA testing, not currently available in Australia, to identify human remains and develop new leads for unsolved crimes, by partnering with a world-leading forensic genomics laboratory.

afp.gov.au

 

[Zedx]

seems there was consideration it may have been a long term missing man around the time this DNA profile was obtained. Reading the attached article the missing man was ruled out as being the deceased from Chidlow.

Coroner rules man who lived a 'simple life' dead after 50 years missing

Sydney "Ron" Guest was last seen in the late 1960s. While a coroner has ruled he is dead, his family is left without answers as to how he disappeared.

www.abc.net.au

was this the reason for a DNA profile to be looked into, so it could be compared to relatives of the missing man?

I dont know, but I do know there are several missing men who fit this profile so I hope it has been compared to them as well.