Hard to say. Here are the top 10 holdings of FLVEX, which is 25% of the index:
XOM EXXON MOBIL CORP
JPM JPMORGAN CHASE & CO
JNJ JOHNSON & JOHNSON
PG PROCTER & GAMBLE CO
INTC INTEL CORP
CSCO CISCO SYSTEMS INC
CVX CHEVRON CORP
PFE PFIZER INC
T AT&T INC
BRK/B BERKSHIRE HATHAWAY INC CL B
Not counting biotech, I see three tech companies.
Here are the top 21 holdings of FSKAX (total market) which is 26% of the index:
Microsoft Corp.
Apple, Inc.
Amazon.com, Inc.
Berkshire Hathaway, Inc. Class B
Facebook, Inc. Class A
Johnson & Johnson
Alphabet, Inc. Class C
JPMorgan Chase & Co.
Exxon Mobil Corp.
Alphabet, Inc. Class A
Bank of America Corp.
Visa, Inc. Class A
Pfizer, Inc.
Procter & Gamble Co.
Intel Corp.
Verizon Communications, Inc.
UnitedHealth Group, Inc.
Cisco Systems, Inc.
The Boeing Co.
Chevron Corp.
AT&T, Inc.
_________
There are a few overlaps there, so the funds aren't that much different. Of the tech companies like AMZN, MSFT, GOOG, AAPL, and FB, the only one that is in bubble territory is AMZN. And it is only about 2.4% of the fund. The others are high, but not nosebleed high, and AAPL is down right reasonable.
So, I dunno. You advisor could be right. If you are worried about at tech bubble then FLVEX might be a tad safer. But higher fees as well, and that's a guaranteed loss.
Personally I just fire and forget on FSKAX.