Opening batsman Warner urged his team-mates to find ‘hatred’ towards the England players this winter as Darren Lehmann’s side bid to retain the urn.
But Trescothick, who made 76 Test appearances and starred in the 2005 Ashes series, insists the tourists will not be influenced by Warner’s remarks.
He told BBC Sport: ‘I don’t think they will get that involved. To come out with those sort of comments is not needed.
‘There’s always the hype that comes around before the Ashes, so I don’t think it’s something the players will be drawn into.
‘I think it will just be a good distraction, hopefully, for Australia and they can get caught up in the war of words.
‘I think it’s pathetic.’
England currently hold the urn but their chances of success in Australia have taken a hit with the news Ben Stokes may not be available after his arrest on suspicion of causing actual bodily harm.
Trescothick admits Joe Root’s side could find it ‘tricky’ this winter despite their dominant victories over South Africa and West Indies over the summer.
‘We’re a little bit unsettled as a team, obviously with the Stokes affair going on, and there’s a few issues in the batting line-up which they need to get sorted,’ former batsman Trescothick added.
‘The combination of being that little bit not quite ready in what their team selection makes it quite tricky going into that environment because it’s quite harsh, it’s quite tough.
‘As a country they [Australia] really go for you so I think we might find it quite tricky.’