Yes, the wagering volume is much higher.
The website shows the wagering volume for the last 10 days. According to the following chart, the average wagering volume in the last 10 days is 126 BTC = 1.2 million dollar.
The wagered amount likely reached its peak and fell down after that. At any perspective, the impressive increase of wagered amount shows that the Freebitco.in casino has gotten more attention from gamblers since the pandemic, and has better growth recent weeks.
Given the 5% house edge and assuming 126 BTC is wagered every day, they are making 60,000 dollar per day.
It should be noted that a big part of this goes to reward points, lottery tickets, faucet, the daily jackpot, monthly contest, referrals wagering commission, etc.
It is a win win marketing approach. Spend some income from house edge to run promotions, faucet, reward points, etc. will catch more flow of gambling capital and win bring more income from house edge. Then the cycle begins again and again. It is very common growth in online gambling industry, big casinos get bigger and have more competitive promotions over time while the newborn casinos have struggled to survive and get users.