Why were peoples t-shirts blocked out during Saturday Morning Slam?

wwe.com said:STAMFORD, Conn. – WWE and Saban Brands' new, weekly half-hour show, "WWE Saturday Morning Slam," debuts on The CW Saturday, Aug. 25, at 10 a.m.
"WWE Saturday Morning Slam" is part of the television premiere of Vortexx on The CW, a Saturday morning kids’ television block reaching 110 million television households in the United States. This marks the first time since 2001 that WWE has a program in a kids’ time slot.
"WWE Saturday Morning Slam" packs riveting in-ring action, larger-than-life WWE Superstars and WWE’s entertaining brand extensions into the fastest, most energy-filled half-hour on television. WWE Superstar profiles, behind-the-scenes footage and an exclusive WWE match every week will all combine to make "WWE Saturday Morning Slam" the perfect destination for the youngest viewers in the WWE Universe. The show also includes highlights from WWE's be a STAR anti-bullying campaign and other community initiatives.
“We are extremely excited to partner with WWE to bring their world-class brand of entertainment to Vortexx,” Joel Andryc, Co-President of Vortexx, said. “With a focus on action, adventure and comedy, Vortexx is the perfect home for 'WWE Saturday Morning Slam' and will definitely excite our fans.”
“WWE has a long history on Saturday mornings, and we’re thrilled to make our action-packed return on exx with 'WWE Saturday Morning Slam,' ” Vince McMahon, WWE Chairman and CEO, said. “The new program enables us to further engage kids and families, a vital component of WWE’s passionate and multi-generational fanbase."