The World Cup comes at a time that female players across the globe are seeking better treatment and pay.
While the prospect of Thailand, the 34th-ranked team in the world, providing a stumbling block for the favourites had appeared remote, Ellis said she had told her team to be relentless in their approach.
Another former Canadian worldwide, Clare Rustad, also unleashed on the USA team on the TSN coverage.
"I just think they could have won with some humility and grace, and they just couldn't manage to do that", Rustad said on TSN's broadcast of the match.
Not only did they fail to qualify for last year's games, the women scored more goals on Tuesday than the men scored in the 2006, 2010 and 2014 World Cups combined (12). The Americans' largest margin came in 1991 against Chinese Taipei with a 7-0 win.
Substitute Mallory Pugh then scored to put the USA up 11-0 and Morgan added her fifth goal of the night to join compatriot Michelle Akers as the only two women to score five in a single match at the World Cup.
"For all that have issue with many goals: for some players this is there first World Cup goal, and they should be excited".
"The bottom line is that this game was not fair or ideal for either team", former U.S. worldwide Yael Averbuch West wroteon Twitter.
Clapping back at hackers, Radiohead to release stolen music as fundraiser
The British band on Tuesday released hours of previously unheard music that it said was stolen by someone seeking ransom. You can listen to the sessions below and download them for £18 at Bandcamp .
Merciless USA break World Cup record against Thailand
Elsewhere, Sweden overcame hard conditions to beat a stubborn Chile side 2-0 in their opening game in Group F in Rennes. The USA will face Chile in Paris at 17:00 BST on 16 June, three hours after Thailand meet Sweden .
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The group also tweeted the link of its "official" Instagram page, though unverified, writing "We are waiting for your support". Amitabh Bachchan's Twitter account faced an untoward activity today after it was hacked by a Turkish hacker.
After the match, manager Jill Ellis defended her team's aggressive style of play even late in the match when result was beyond doubt.
"Both did their best given the situation".
Of the nine games in the opening four days of the tournament, the only capacity games were host France's victory over South Korea in Paris and Brazil's win over Jamaica in Grenoble. "We got a lot of attacks and I think we were really clinical in the number of attacks that we did get".
"Obviously we have the utmost respect for everyone we play, but it's the World Cup", said captain Megan Rapinoe.
Morgan, U.S. Soccer's 2018 Player of the Year, now has 106 worldwide goals.
Thailand, playing in just its second World Cup, had its players leave the field in tears after the heavy defeat.
While Wambach asked the USWNT to continue to do its best to find more goals, she called on Federation Internationale de Football Association to give more resources to countries that need it.
"It's incredible, I don't know, I'm speechless", Morgan said.