Wayne 'Buck' Shelford said Williams' selection over Taranaki lock Jarrad Hoeata was disappointing after he had a poor outing against the Springboks in Port Elizabeth on Saturday.
"I don't think Ali is up for it any more... Hoeata would have been a better options with him being young and being around for the next four years.
"His workrate is down. He's going to have to pick his act up that's for sure. Around the field he's just doing nothing most of the time."
Mr Shelford said it was difficult to justify picking Williams on experience when veteran wing Sivivatu was left out in favour of Guildford - a relative newcomer to the team.
Former All Black lock Andy Haden disagreed with the pair's assessment.
He said Williams was the most in form lock in the country, followed by fellow All Black inclusions Sam Whitelock and Brad Thorne.
"He is the strongest at the basics. He does the core job of a lock the best."
Mr Haden said midfielder Sonny Bill Williams was lucky to be included in the squad on recent form - but had likely been picked as a potential game breaker alongside potential starting fullback Israel Dagg.
Graham Mourie, a former flanker who captained the All Blacks in 57 tests, said the side selected today was a good balance of youth and experience.
He said the selectors had valued players who worked hard and the ability to perform well under pressure.
Colin Meads
On Zac Guildford: "He's all over the field. If he was on the field Saturday he'd have scored a couple of tries."
On the selection of Tony Woodcock over Wyatt Crockett: "I think Wyatt Crocket is the unlucky one. I'd have thought he'd be picked on his performance."
Wayne "Buck" Shelford
On the selection of Ali Williams: "I don't think Ali is up for it any more... Hoeata would have been a better options with him being young and being around for the next four years."
On Liam Messam missing out: "I'm disappointed for Liam. Victor Vito hasn't had a great season."
Andy Haden
On Ali Williams: "Ali Williams is the number one lock in the country."
On Sonny Bill Williams: "Sonny Bill Williams is a bit lucky to be there and is probably there because they've gone for some game breaker type contribution."
Graham Mourie
On the squad: "They've made the tough calls. They've gone for players with high workrates and that can perform under pressure... They can win it."
The All Blacks Rugby World Cup squad
Forwards:
Corey Flynn, Canterbury
Andrew Hore, Taranaki
Keven Mealamu, Auckland
John Afoa, Auckland
Ben Franks, Tasman
Owen Franks, Canterbury
Tony Woodcock, North Harbour
Anthony Boric, North Harbour
Brad Thorn, Canterbury
Samuel Whitelock, Canterbury
Ali Williams, Auckland
Jerome Kaino, Auckland
Richie McCaw, (capt) Canterbury
Kieran Read, Canterbury
Adam Thomson, Otago
Victor Vito, Wellington
Backs:
Jimmy Cowan, Southland
Andy Ellis, Canterbury
Piri Weepu, Wellington
Daniel Carter, Canterbury
Colin Slade, Canterbury
Richard Kahui, Waikato
Ma'a Nonu, Wellington
Conrad Smith, Wellington
Sonny Bill Williams, Canterbury
Israel Dagg, Hawke's Bay
Zac Guildford, Hawke's Bay
Cory Jane, Wellington
Mils Muliaina, Waikato
Isaia Toeava, Auckland